256470726 has 16 divisors (see below), whose sum is σ = 513241344. Its totient is φ = 85440264.

The previous prime is 256470701. The next prime is 256470749. The reversal of 256470726 is 627074652.

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 7 ways as a sum of consecutive naturals, for example, 490 + ... + 22653.

It is an arithmetic number, because the mean of its divisors is an integer number (32077584).

Almost surely, 2^256470726 is an apocalyptic number.

256470726 is an abundant number, since it is smaller than the sum of its proper divisors (256770618).

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

256470726 is a wasteful number, since it uses less digits than its factorization.

256470726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24995.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 256470726 is about 16014.7034315344. The cubic root of 256470726 is about 635.3493652762.

The spelling of 256470726 in words is "two hundred fifty-six million, four hundred seventy thousand, seven hundred twenty-six".