256998952 has 32 divisors (see below), whose sum is σ = 554238720. Its totient is φ = 109437120.

The previous prime is 256998943. The next prime is 256998971. The reversal of 256998952 is 259899652.

It is a super-2 number, since 2×256998952² = 132096922658196608, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256998893 and 256998902.

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, 5824 + ... + 23407.

It is an arithmetic number, because the mean of its divisors is an integer number (17319960).

Almost surely, 2^256998952 is an apocalyptic number.

It is an amenable number.

256998952 is an abundant number, since it is smaller than the sum of its proper divisors (297239768).

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

256998952 is a wasteful number, since it uses less digits than its factorization.

256998952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29401 (or 29397 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 55.

The square root of 256998952 is about 16031.1868556261. The cubic root of 256998952 is about 635.7852537649.

The spelling of 256998952 in words is "two hundred fifty-six million, nine hundred ninety-eight thousand, nine hundred fifty-two".