284 (number)
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284 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 283 and preceding 285.


In mathematics

*284 is an even
composite number A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Accordingly it is a positive integer that has at least one divisor other than 1 and itself. Every positive integer is composite, prime numb ...
with 2 distinct prime factors. *284 is in the first pair of amicable numbers with 220. That means that the sum of the proper divisors are the same between the two numbers. *284 can be written as a sum of exactly 4 nonzero perfect squares. *284 is a
nontotient In number theory, a nontotient is a positive integer ''n'' which is not a totient number: it is not in the range of Euler's totient function φ, that is, the equation φ(''x'') = ''n'' has no solution ''x''. In other words, ''n'' is a nontotie ...
number which are numbers where phi(x) equaling that number has no solution. *284 is a number that is the nth prime plus n. It is the 51st prime number ( 233) plus 51.


References

{{Improve categories, date=October 2023 Integers