256013604 has 72 divisors (see below), whose sum is σ = 806839488. Its totient is φ = 66496320.

The previous prime is 256013599. The next prime is 256013629. The reversal of 256013604 is 406310652.

256013604 is a `hidden beast` number, since 2 + 56 + 0 + 1 + 3 + 604 = 666.

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 23 ways as a sum of consecutive naturals, for example, 43407 + ... + 48950.

It is an arithmetic number, because the mean of its divisors is an integer number (11206104).

Almost surely, 2^256013604 is an apocalyptic number.

It is an amenable number.

256013604 is an abundant number, since it is smaller than the sum of its proper divisors (550825884).

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

256013604 is a wasteful number, since it uses less digits than its factorization.

256013604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92385 (or 92380 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 256013604 is about 16000.4251193523. The cubic root of 256013604 is about 634.9716679859.

The spelling of 256013604 in words is "two hundred fifty-six million, thirteen thousand, six hundred four".