256568922 has 12 divisors (see below), whose sum is σ = 555899370. Its totient is φ = 85522968.

The previous prime is 256568843. The next prime is 256568953. The reversal of 256568922 is 229865652.

256568922 is a `hidden beast` number, since 2 + 565 + 6 + 89 + 2 + 2 = 666.

256568922 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 254434401 + 2134521 = 15951^2 + 1461^2 .

It is a super-2 number, since 2×256568922² = 131655223472484168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7126897 + ... + 7126932.

Almost surely, 2^256568922 is an apocalyptic number.

256568922 is an abundant number, since it is smaller than the sum of its proper divisors (299330448).

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

256568922 is a wasteful number, since it uses less digits than its factorization.

256568922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14253837 (or 14253834 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 256568922 is about 16017.7689457677. The cubic root of 256568922 is about 635.4304412033.

The spelling of 256568922 in words is "two hundred fifty-six million, five hundred sixty-eight thousand, nine hundred twenty-two".