256892070 has 32 divisors (see below), whose sum is σ = 625747968. Its totient is φ = 67481568.

The previous prime is 256892057. The next prime is 256892093. The reversal of 256892070 is 70298652.

It is a happy 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, 61894 + ... + 65913.

It is an arithmetic number, because the mean of its divisors is an integer number (19554624).

Almost surely, 2^256892070 is an apocalyptic number.

256892070 is an abundant number, since it is smaller than the sum of its proper divisors (368855898).

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

256892070 is a wasteful number, since it uses less digits than its factorization.

256892070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127884.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 256892070 is about 16027.8529441719. The cubic root of 256892070 is about 635.6971037012.

The spelling of 256892070 in words is "two hundred fifty-six million, eight hundred ninety-two thousand, seventy".