256560772 has 24 divisors (see below), whose sum is σ = 490335552. Its totient is φ = 116743200.

The previous prime is 256560769. The next prime is 256560797. The reversal of 256560772 is 277065652.

256560772 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 7 ways as a sum of consecutive naturals, for example, 31054 + ... + 38437.

It is an arithmetic number, because the mean of its divisors is an integer number (20430648).

Almost surely, 2^256560772 is an apocalyptic number.

It is an amenable number.

256560772 is a deficient number, since it is larger than the sum of its proper divisors (233774780).

256560772 is a wasteful number, since it uses less digits than its factorization.

256560772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69579 (or 69577 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 256560772 is about 16017.5145387791. The cubic root of 256560772 is about 635.4237129099.

The spelling of 256560772 in words is "two hundred fifty-six million, five hundred sixty thousand, seven hundred seventy-two".