280881315 has 48 divisors (see below), whose sum is σ = 571989600. Its totient is φ = 125706240.

The previous prime is 280881281. The next prime is 280881317. The reversal of 280881315 is 513188082.

It is not a de Polignac number, because 280881315 - 2⁷ = 280881187 is a prime.

It is a super-2 number, since 2×280881315² = 157788626232258450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 280881315.

It is not an unprimeable number, because it can be changed into a prime (280881317) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15390 + ... + 28259.

It is an arithmetic number, because the mean of its divisors is an integer number (11916450).

Almost surely, 2^280881315 is an apocalyptic number.

280881315 is an abundant number, since it is smaller than the sum of its proper divisors (291108285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

280881315 is a wasteful number, since it uses less digits than its factorization.

280881315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43684 (or 43681 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 280881315 is about 16759.5141636027. The cubic root of 280881315 is about 654.8989335740.

It can be divided in two parts, 28088 and 1315, that added together give a triangular number (29403 = T₂₄₂).

The spelling of 280881315 in words is "two hundred eighty million, eight hundred eighty-one thousand, three hundred fifteen".