256774472 has 16 divisors (see below), whose sum is σ = 493195500. Its totient is φ = 125255680.

The previous prime is 256774471. The next prime is 256774481. The reversal of 256774472 is 274477652.

It can be written as a sum of positive squares in 2 ways, for example, as 251729956 + 5044516 = 15866^2 + 2246^2 .

It is not an unprimeable number, because it can be changed into a prime (256774471) 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, 391097 + ... + 391752.

Almost surely, 2^256774472 is an apocalyptic number.

It is an amenable number.

256774472 is a deficient number, since it is larger than the sum of its proper divisors (236421028).

256774472 is a wasteful number, since it uses less digits than its factorization.

256774472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782896 (or 782892 counting only the distinct ones).

The product of its digits is 658560, while the sum is 44.

The square root of 256774472 is about 16024.1839729828. The cubic root of 256774472 is about 635.6000874483.

The spelling of 256774472 in words is "two hundred fifty-six million, seven hundred seventy-four thousand, four hundred seventy-two".