256845370 has 32 divisors (see below), whose sum is σ = 483563520. Its totient is φ = 98224720.

The previous prime is 256845359. The next prime is 256845397. The reversal of 256845370 is 73548652.

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, 120615 + ... + 122725.

It is an arithmetic number, because the mean of its divisors is an integer number (15111360).

Almost surely, 2^256845370 is an apocalyptic number.

256845370 is a deficient number, since it is larger than the sum of its proper divisors (226718150).

256845370 is an equidigital number, since it uses as much as digits as its factorization.

256845370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2141 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 256845370 is about 16026.3960390351. The cubic root of 256845370 is about 635.6585805789.

It can be divided in two parts, 25 and 6845370, that multiplied together give a triangular number (171134250 = T₁₈₅₀₀).

The spelling of 256845370 in words is "two hundred fifty-six million, eight hundred forty-five thousand, three hundred seventy".