256830968 has 16 divisors (see below), whose sum is σ = 509885280. Its totient is φ = 120861568.

The previous prime is 256830947. The next prime is 256831021. The reversal of 256830968 is 869038652.

It is a happy number.

It is a super-2 number, since 2×256830968² = 131924292247634048, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 944096 + ... + 944367.

It is an arithmetic number, because the mean of its divisors is an integer number (31867830).

Almost surely, 2^256830968 is an apocalyptic number.

It is an amenable number.

256830968 is a deficient number, since it is larger than the sum of its proper divisors (253054312).

256830968 is a wasteful number, since it uses less digits than its factorization.

256830968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888486 (or 1888482 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 47.

The square root of 256830968 is about 16025.9467115051. The cubic root of 256830968 is about 635.6466993369.

The spelling of 256830968 in words is "two hundred fifty-six million, eight hundred thirty thousand, nine hundred sixty-eight".