280052856 has 64 divisors (see below), whose sum is σ = 818880000. Its totient is φ = 88436448.

The previous prime is 280052827. The next prime is 280052879. The reversal of 280052856 is 658250082.

280052856 is a `hidden beast` number, since 2 + 80 + 0 + 528 + 56 = 666.

280052856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 280052856.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 30016 + ... + 38223.

It is an arithmetic number, because the mean of its divisors is an integer number (12795000).

Almost surely, 2^280052856 is an apocalyptic number.

It is an amenable number.

280052856 is an abundant number, since it is smaller than the sum of its proper divisors (538827144).

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

280052856 is a wasteful number, since it uses less digits than its factorization.

280052856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68273 (or 68263 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 280052856 is about 16734.7798312377. The cubic root of 280052856 is about 654.2544250384.

The spelling of 280052856 in words is "two hundred eighty million, fifty-two thousand, eight hundred fifty-six".