256712464 has 20 divisors (see below), whose sum is σ = 498269200. Its totient is φ = 128126880.

The previous prime is 256712441. The next prime is 256712497. The reversal of 256712464 is 464217652.

256712464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4914 + ... + 23185.

It is an arithmetic number, because the mean of its divisors is an integer number (24913460).

Almost surely, 2^256712464 is an apocalyptic number.

It is an amenable number.

256712464 is a deficient number, since it is larger than the sum of its proper divisors (241556736).

256712464 is a wasteful number, since it uses less digits than its factorization.

256712464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28678 (or 28672 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 256712464 is about 16022.2490306449. The cubic root of 256712464 is about 635.5489200264.

The spelling of 256712464 in words is "two hundred fifty-six million, seven hundred twelve thousand, four hundred sixty-four".