256562404 has 24 divisors (see below), whose sum is σ = 513592128. Its totient is φ = 109855200.

The previous prime is 256562399. The next prime is 256562407. The reversal of 256562404 is 404265652.

It is a self number, because there is not a number n which added to its sum of digits gives 256562404.

It is not an unprimeable number, because it can be changed into a prime (256562407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32907 + ... + 39949.

It is an arithmetic number, because the mean of its divisors is an integer number (21399672).

Almost surely, 2^256562404 is an apocalyptic number.

It is an amenable number.

256562404 is an abundant number, since it is smaller than the sum of its proper divisors (257029724).

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

256562404 is a wasteful number, since it uses less digits than its factorization.

256562404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8355 (or 8353 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 256562404 is about 16017.5654829315. The cubic root of 256562404 is about 635.4250602311.

The spelling of 256562404 in words is "two hundred fifty-six million, five hundred sixty-two thousand, four hundred four".