256882556 has 48 divisors (see below), whose sum is σ = 525504000. Its totient is φ = 107604288.

The previous prime is 256882553. The next prime is 256882643. The reversal of 256882556 is 655288652.

It is a self number, because there is not a number n which added to its sum of digits gives 256882556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256882553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279065 + ... + 279983.

It is an arithmetic number, because the mean of its divisors is an integer number (10948000).

Almost surely, 2^256882556 is an apocalyptic number.

It is an amenable number.

256882556 is an abundant number, since it is smaller than the sum of its proper divisors (268621444).

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

256882556 is a wasteful number, since it uses less digits than its factorization.

256882556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1144 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 47.

The square root of 256882556 is about 16027.5561455888. The cubic root of 256882556 is about 635.6892559217.

The spelling of 256882556 in words is "two hundred fifty-six million, eight hundred eighty-two thousand, five hundred fifty-six".