256228768 has 24 divisors (see below), whose sum is σ = 507481632. Its totient is φ = 127344576.

The previous prime is 256228741. The next prime is 256228781. The reversal of 256228768 is 867822652.

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, 18630 + ... + 29317.

It is an arithmetic number, because the mean of its divisors is an integer number (21145068).

Almost surely, 2^256228768 is an apocalyptic number.

It is an amenable number.

256228768 is a deficient number, since it is larger than the sum of its proper divisors (251252864).

256228768 is a wasteful number, since it uses less digits than its factorization.

256228768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48124 (or 48116 counting only the distinct ones).

The product of its digits is 645120, while the sum is 46.

The square root of 256228768 is about 16007.1474035819. The cubic root of 256228768 is about 635.1495033108.

The spelling of 256228768 in words is "two hundred fifty-six million, two hundred twenty-eight thousand, seven hundred sixty-eight".