256747004 has 12 divisors (see below), whose sum is σ = 449420664. Its totient is φ = 128341104.

The previous prime is 256746911. The next prime is 256747021. The reversal of 256747004 is 400747652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22982 + ... + 32274.

It is an arithmetic number, because the mean of its divisors is an integer number (37451722).

Almost surely, 2^256747004 is an apocalyptic number.

It is an amenable number.

256747004 is a deficient number, since it is larger than the sum of its proper divisors (192673660).

256747004 is a wasteful number, since it uses less digits than its factorization.

256747004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16204 (or 16202 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 256747004 is about 16023.3268705347. The cubic root of 256747004 is about 635.5774225709.

The spelling of 256747004 in words is "two hundred fifty-six million, seven hundred forty-seven thousand, four".