256907022 has 16 divisors (see below), whose sum is σ = 519112272. Its totient is φ = 84752640.

The previous prime is 256907017. The next prime is 256907041. The reversal of 256907022 is 220709652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220129 + ... + 221292.

It is an arithmetic number, because the mean of its divisors is an integer number (32444517).

Almost surely, 2^256907022 is an apocalyptic number.

256907022 is an abundant number, since it is smaller than the sum of its proper divisors (262205250).

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

256907022 is a wasteful number, since it uses less digits than its factorization.

256907022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441523.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 256907022 is about 16028.3193754055. The cubic root of 256907022 is about 635.7094367128.

The spelling of 256907022 in words is "two hundred fifty-six million, nine hundred seven thousand, twenty-two".