384 (three hundred ndeighty-four) is the

natural number In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positive in ...

following

383 383 most commonly refers to: * 383 (number), the natural number following 382 and preceding 384. * AD 383, a year * 383 BC, a year 383 may also refer to: Astronomy * 383 Janina, a Themistian asteroid * Abell 383, a galaxy cluster * HOPS 383, a c ...

and preceding

385 Year 385 (Roman numerals, CCCLXXXV) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Arcadius, Augustus and Bauto (or, less frequently, year 1138 ''Ab urbe condita''). The ...

. It is an even composite positive integer.

In mathematics

384 is: * the sum of a

twin prime A twin prime is a prime number that is either 2 less or 2 more than another prime number—for example, either member of the twin prime pair or In other words, a twin prime is a prime that has a prime gap of two. Sometimes the term ''twin prime' ...

pair (191 + 193). * the sum of six consecutive primes (53 + 59 + 61 + 67 + 71 + 73). * the order of the

hyperoctahedral group A hyperoctahedral group is a type of mathematical Group (mathematics), group that arises as the symmetry group, group of symmetries of a hypercube or of a cross-polytope. It was named by Alfred Young (mathematician), Alfred Young in 1930. Groups ...

for ''n'' = 4 * the

double factorial In mathematics, the double factorial of a number , denoted by , is the product of all the positive integers up to that have the same Parity (mathematics), parity (odd or even) as . That is, n!! = \prod_^ (n-2k) = n (n-2) (n-4) \cdots. Restated ...

of 8. * an

abundant number In number theory, an abundant number or excessive number is a positive integer for which the sum of its proper divisors is greater than the number. The integer 12 is the first abundant number. Its proper divisors are 1, 2, 3, 4 and 6 for a total ...

. * the third 129-gonal number after 1, 129 and before 766 and 1275. * a

Harshad number In mathematics, a harshad number (or Niven number) in a given radix, number base is an integer that is divisible by the digit sum, sum of its digits when written in that base. Harshad numbers in base are also known as -harshad (or -Niven) numbers ...

in bases 2, 3, 4, 5, 7, 8, 9, 13, 17, and 62 other bases. * a

refactorable number A refactorable number or tau number is an integer ''n'' that is divisible by the count of its divisors, or to put it algebraically, ''n'' is such that \tau(n)\mid n with \tau(n)=\sigma_0(n)=\prod_^(e_i+1) for n=\prod_^np_i^. The first few refact ...

Computing

Being a low multiple of a

power of two A power of two is a number of the form where is an integer, that is, the result of exponentiation with number 2, two as the Base (exponentiation), base and integer as the exponent. In the fast-growing hierarchy, is exactly equal to f_1^ ...

, 384 occurs often in the field of computing. For example, the secure hash function

SHA-384 SHA-2 (Secure Hash Algorithm 2) is a set of cryptographic hash functions designed by the United States National Security Agency (NSA) and first published in 2001. They are built using the Merkle–Damgård construction, from a one-way compression ...

has a 384-bit digest, the screen resolution of the Virtual Boy is 384x 224,

MP3 MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg. It was designed to greatly reduce the amount ...

Audio layer 1 encoding is 384 kbps, and in 3G phones the WAN implementation of

CDMA Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communicatio ...

is up to 384 kbps.

References

External links

Integers {{Num-stub