256089968 has 10 divisors (see below), whose sum is σ = 496174344. Its totient is φ = 128044976.

The previous prime is 256089949. The next prime is 256089973. The reversal of 256089968 is 869980652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8002796 + ... + 8002827.

Almost surely, 2^256089968 is an apocalyptic number.

It is an amenable number.

256089968 is a deficient number, since it is larger than the sum of its proper divisors (240084376).

256089968 is a wasteful number, since it uses less digits than its factorization.

256089968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16005631 (or 16005625 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The square root of 256089968 is about 16002.8112530268. The cubic root of 256089968 is about 635.0347950430.

The spelling of 256089968 in words is "two hundred fifty-six million, eighty-nine thousand, nine hundred sixty-eight".