256756874 has 16 divisors (see below), whose sum is σ = 426067776. Its totient is φ = 115063200.

The previous prime is 256756859. The next prime is 256756891. The reversal of 256756874 is 478657652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80627 + ... + 83750.

It is an arithmetic number, because the mean of its divisors is an integer number (26629236).

Almost surely, 2^256756874 is an apocalyptic number.

256756874 is a deficient number, since it is larger than the sum of its proper divisors (169310902).

256756874 is a wasteful number, since it uses less digits than its factorization.

256756874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164461.

The product of its digits is 2822400, while the sum is 50.

The square root of 256756874 is about 16023.6348560494. The cubic root of 256756874 is about 635.5855668643.

The spelling of 256756874 in words is "two hundred fifty-six million, seven hundred fifty-six thousand, eight hundred seventy-four".