256588422 has 16 divisors (see below), whose sum is σ = 517719600. Its totient is φ = 84772352.

The previous prime is 256588403. The next prime is 256588469. The reversal of 256588422 is 224885652.

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, 188547 + ... + 189902.

It is an arithmetic number, because the mean of its divisors is an integer number (32357475).

Almost surely, 2^256588422 is an apocalyptic number.

256588422 is an abundant number, since it is smaller than the sum of its proper divisors (261131178).

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

256588422 is a wasteful number, since it uses less digits than its factorization.

256588422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378567.

The product of its digits is 307200, while the sum is 42.

The square root of 256588422 is about 16018.3776332062. The cubic root of 256588422 is about 635.4465389956.

The spelling of 256588422 in words is "two hundred fifty-six million, five hundred eighty-eight thousand, four hundred twenty-two".