256899922 has 16 divisors (see below), whose sum is σ = 402517440. Its totient is φ = 122813712.

The previous prime is 256899919. The next prime is 256899943. The reversal of 256899922 is 229998652.

It is a self number, because there is not a number n which added to its sum of digits gives 256899922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15528 + ... + 27475.

It is an arithmetic number, because the mean of its divisors is an integer number (25157340).

Almost surely, 2^256899922 is an apocalyptic number.

256899922 is a deficient number, since it is larger than the sum of its proper divisors (145617518).

256899922 is a wasteful number, since it uses less digits than its factorization.

256899922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43137.

The product of its digits is 1399680, while the sum is 52.

The square root of 256899922 is about 16028.0978908915. The cubic root of 256899922 is about 635.7035804066.

The spelling of 256899922 in words is "two hundred fifty-six million, eight hundred ninety-nine thousand, nine hundred twenty-two".