262 (two hundred ndsixty-two) is a natural number proceeded by the number 261 and followed by 263. It has the prime factorization 2·131.

Mathematical properties

There are four divisors of this number, the divisors being , , , and 262 itself, which makes it a

semiprime In mathematics, a semiprime is a natural number that is the product of exactly two prime numbers. The two primes in the product may equal each other, so the semiprimes include the squares of prime numbers. Because there are infinitely many prime ...

. It is the sixth meandric number, and the ninth

open meandric number In mathematics, a meander or closed meander is a self-avoiding closed curve which intersects a line a number of times. Intuitively, a meander can be viewed as a road crossing a river through a number of bridges. Meander Given a fixed oriented li ...

. As it cannot be divided into the sum of the proper divisors of any number, it is the 17th

untouchable number An untouchable number is a positive integer that cannot be expressed as the sum of all the proper divisors of any positive integer (including the untouchable number itself). That is, these numbers are not in the image of the aliquot sum function. ...

. As it eventually reaches 1 when replaced by the sum of the square of each digit, it is the 40th 10-

happy number In number theory, a happy number is a number which eventually reaches 1 when replaced by the sum of the square of each digit. For instance, 13 is a happy number because 1^2+3^2=10, and 1^2+0^2=1. On the other hand, 4 is not a happy number because ...

. As 262 is 262 backwards, it is a

palindrome number A palindromic number (also known as a numeral palindrome or a numeric palindrome) is a number (such as 16461) that remains the same when its digits are reversed. In other words, it has reflectional symmetry across a vertical axis. The term ''pali ...

. 262 was once the lowest number not to have its own

Wikipedia Wikipedia is a multilingual free online encyclopedia written and maintained by a community of volunteers, known as Wikipedians, through open collaboration and using a wiki-based editing system. Wikipedia is the largest and most-read refer ...

page for more than three years since March 2017 when 261 was first created, this making it a candidate for the lowest uninteresting Number according to the definition given by

Alex Bellos Alexander Bellos (born 1969) is a British writer, broadcaster and mathematics communicator.Alex Bellos He is the author of books about Brazil and mathematics, as well as having a column in ''The Guardian'' newspaper. Education and early life ...

In other fields

262 may refer to: *

262 __NOTOC__ Year 262 ( CCLXII) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Gallienus and Faustianus (or, less frequently, year ...

AD, a calendar year *

262 BC __NOTOC__ Year 262 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Valerius and Otacilius (or, less frequently, year 492 ''Ab urbe condita''). The denomination 262 BC for this year has be ...

, a calendar year * +262, a country calling code, see

Telephone numbers in France The French telephone numbering plan is used in Metropolitan France, French overseas departments and some overseas collectivities. France uses a ten-digit closed numbering plan, where the first two digits denote a geographic area, mobile or non-g ...

Area code 262 North American telephone area code 262 covers much of Southeastern Wisconsin, and was created on September 25, 1999, when it was split from area code 414. It covers most of the suburbs of Milwaukee, but not Milwaukee County itself. The eastern p ...

, which covers most of Southeast Wisconsin ;Military/ Transportation *

Aérospatiale N 262 The Aérospatiale N 262 is a French twin-turboprop high-wing airliner built first by Nord Aviation (merged into Aérospatiale in 1970). The aircraft was also known as the Nord 262. Design and development In 1957, the French aircraft manufactu ...

, a French airliner of the 1960s *

Messerschmitt Me 262 The Messerschmitt Me 262, nicknamed ''Schwalbe'' (German: "Swallow") in fighter versions, or ''Sturmvogel'' (German: "Storm Bird") in fighter-bomber versions, is a fighter aircraft and fighter-bomber that was designed and produced by the Germ ...

, an airplane of the 1940s * VMM-262, a United States Marine Corps squadron * 2-6-2, or called a "Prairie", a locomotive

wheel arrangement In rail transport, a wheel arrangement or wheel configuration is a system of classifying the way in which wheels are distributed under a locomotive. Several notations exist to describe the wheel assemblies of a locomotive by type, position, and c ...

Hill 262 Battle of Hill 262, or the Mont Ormel ridge (elevation ), is an area of high ground above the village of Coudehard in Normandy that was the location of a bloody engagement in the final stages of the Battle of Falaise in the Normandy Campaign du ...

, the place where a battle was fought in 19-21 August, 1944 ;Science * A-262, an organophosphate nerve agent * E262,

Sodium Acetate Sodium acetate, CH3COONa, also abbreviated Na O Ac, is the sodium salt of acetic acid. This colorless deliquescent salt has a wide range of uses. Applications Biotechnological Sodium acetate is used as the carbon source for culturing bacteria ...

NGC 262 NGC commonly refers to: * New General Catalogue of Nebulae and Clusters of Stars, a catalogue of deep sky objects in astronomy NGC may also refer to: Companies * NGC Corporation, name of US electric company Dynegy, Inc. from 1995 to 1998 * Nati ...

, a huge spiral galaxy in the cluster LGG 14 * 262 Valda, a minor planet * Kosmos 262, a 1968 Soviet Satellite ;See also * List of highways numbered 262 *

References

{{Integers, 2 Integers