256427404 has 24 divisors (see below), whose sum is σ = 461050128. Its totient is φ = 124723200.

The previous prime is 256427399. The next prime is 256427411. The reversal of 256427404 is 404724652.

It is a self number, because there is not a number n which added to its sum of digits gives 256427404.

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, 41304 + ... + 47104.

It is an arithmetic number, because the mean of its divisors is an integer number (19210422).

Almost surely, 2^256427404 is an apocalyptic number.

It is an amenable number.

256427404 is a deficient number, since it is larger than the sum of its proper divisors (204622724).

256427404 is a wasteful number, since it uses less digits than its factorization.

256427404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6105 (or 6103 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 256427404 is about 16013.3508048753. The cubic root of 256427404 is about 635.3135897115.

The spelling of 256427404 in words is "two hundred fifty-six million, four hundred twenty-seven thousand, four hundred four".