256670726 has 24 divisors (see below), whose sum is σ = 440459040. Its totient is φ = 111491712.

The previous prime is 256670707. The next prime is 256670767. The reversal of 256670726 is 627076652.

It is a happy number.

256670726 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9566 + ... + 24593.

It is an arithmetic number, because the mean of its divisors is an integer number (18352460).

Almost surely, 2^256670726 is an apocalyptic number.

256670726 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

256670726 is a deficient number, since it is larger than the sum of its proper divisors (183788314).

256670726 is a wasteful number, since it uses less digits than its factorization.

256670726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34208 (or 34191 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 256670726 is about 16020.9464764102. The cubic root of 256670726 is about 635.5144742524.

The spelling of 256670726 in words is "two hundred fifty-six million, six hundred seventy thousand, seven hundred twenty-six".