256794672 has 20 divisors (see below), whose sum is σ = 663386360. Its totient is φ = 85598208.

The previous prime is 256794661. The next prime is 256794691. The reversal of 256794672 is 276497652.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 5349889 = 256794672 / (2 + 5 + 6 + 7 + 9 + 4 + 6 + 7 + 2).

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, 2674897 + ... + 2674992.

It is an arithmetic number, because the mean of its divisors is an integer number (33169318).

Almost surely, 2^256794672 is an apocalyptic number.

It is an amenable number.

256794672 is an abundant number, since it is smaller than the sum of its proper divisors (406591688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256794672 is a wasteful number, since it uses less digits than its factorization.

256794672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349900 (or 5349894 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 256794672 is about 16024.8142578939. The cubic root of 256794672 is about 635.6167541948.

The spelling of 256794672 in words is "two hundred fifty-six million, seven hundred ninety-four thousand, six hundred seventy-two".