280081056 has 24 divisors (see below), whose sum is σ = 735213024. Its totient is φ = 93360320.

The previous prime is 280081027. The next prime is 280081057. The reversal of 280081056 is 650180082.

280081056 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (280081057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458660 + ... + 1458851.

It is an arithmetic number, because the mean of its divisors is an integer number (30633876).

Almost surely, 2^280081056 is an apocalyptic number.

It is an amenable number.

280081056 is an abundant number, since it is smaller than the sum of its proper divisors (455131968).

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

280081056 is a wasteful number, since it uses less digits than its factorization.

280081056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917524 (or 2917516 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 280081056 is about 16735.6223666764. The cubic root of 280081056 is about 654.2763844116.

The spelling of 280081056 in words is "two hundred eighty million, eighty-one thousand, fifty-six".