256297974 has 32 divisors (see below), whose sum is σ = 525571200. Its totient is φ = 83278272.

The previous prime is 256297961. The next prime is 256297997. The reversal of 256297974 is 479792652.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243802 + ... + 244850.

It is an arithmetic number, because the mean of its divisors is an integer number (16424100).

Almost surely, 2^256297974 is an apocalyptic number.

256297974 is an abundant number, since it is smaller than the sum of its proper divisors (269273226).

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

256297974 is a wasteful number, since it uses less digits than its factorization.

256297974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044.

The product of its digits is 1905120, while the sum is 51.

The square root of 256297974 is about 16009.3089794657. The cubic root of 256297974 is about 635.2066816415.

The spelling of 256297974 in words is "two hundred fifty-six million, two hundred ninety-seven thousand, nine hundred seventy-four".