68438256 has 20 divisors (see below), whose sum is σ = 176798952. Its totient is φ = 22812736.

The previous prime is 68438239. The next prime is 68438263. The reversal of 68438256 is 65283486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 712851 + ... + 712946.

Almost surely, 2^68438256 is an apocalyptic number.

It is an amenable number.

68438256 is an abundant number, since it is smaller than the sum of its proper divisors (108360696).

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

68438256 is a wasteful number, since it uses less digits than its factorization.

68438256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425808 (or 1425802 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 68438256 is about 8272.7417462411. The cubic root of 68438256 is about 409.0405006890.

The spelling of 68438256 in words is "sixty-eight million, four hundred thirty-eight thousand, two hundred fifty-six".