256465004 has 12 divisors (see below), whose sum is σ = 459760728. Its totient is φ = 125104800.

The previous prime is 256465003. The next prime is 256465057. The reversal of 256465004 is 400564652.

256465004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (256465003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781742 + ... + 782069.

It is an arithmetic number, because the mean of its divisors is an integer number (38313394).

Almost surely, 2^256465004 is an apocalyptic number.

It is an amenable number.

256465004 is a deficient number, since it is larger than the sum of its proper divisors (203295724).

256465004 is a wasteful number, since it uses less digits than its factorization.

256465004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563856 (or 1563854 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 256465004 is about 16014.5247822094. The cubic root of 256465004 is about 635.3446402456.

The spelling of 256465004 in words is "two hundred fifty-six million, four hundred sixty-five thousand, four".