280894880 has 48 divisors (see below), whose sum is σ = 758419200. Its totient is φ = 96306432.

The previous prime is 280894847. The next prime is 280894891. The reversal of 280894880 is 88498082.

280894880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×280894880² = 157803867220428800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124280 + ... + 126519.

It is an arithmetic number, because the mean of its divisors is an integer number (15800400).

Almost surely, 2^280894880 is an apocalyptic number.

280894880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280894880 is an abundant number, since it is smaller than the sum of its proper divisors (477524320).

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

280894880 is a wasteful number, since it uses less digits than its factorization.

280894880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250821 (or 250813 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 47.

The square root of 280894880 is about 16759.9188542188. The cubic root of 280894880 is about 654.9094760588.

The spelling of 280894880 in words is "two hundred eighty million, eight hundred ninety-four thousand, eight hundred eighty".