256922274 has 16 divisors (see below), whose sum is σ = 587251008. Its totient is φ = 73406352.

The previous prime is 256922249. The next prime is 256922279. The reversal of 256922274 is 472229652.

It is not an unprimeable number, because it can be changed into a prime (256922279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3058557 + ... + 3058640.

It is an arithmetic number, because the mean of its divisors is an integer number (36703188).

Almost surely, 2^256922274 is an apocalyptic number.

256922274 is an abundant number, since it is smaller than the sum of its proper divisors (330328734).

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

256922274 is a wasteful number, since it uses less digits than its factorization.

256922274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6117209.

The product of its digits is 120960, while the sum is 39.

The square root of 256922274 is about 16028.7951512271. The cubic root of 256922274 is about 635.7220166836.

It can be divided in two parts, 25692 and 2274, that added together give a triangular number (27966 = T₂₃₆).

The spelling of 256922274 in words is "two hundred fifty-six million, nine hundred twenty-two thousand, two hundred seventy-four".