256672308 has 12 divisors (see below), whose sum is σ = 598902080. Its totient is φ = 85557432.

The previous prime is 256672303. The next prime is 256672309. The reversal of 256672308 is 803276652.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256672303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10694668 + ... + 10694691.

Almost surely, 2^256672308 is an apocalyptic number.

It is an amenable number.

256672308 is an abundant number, since it is smaller than the sum of its proper divisors (342229772).

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

256672308 is a wasteful number, since it uses less digits than its factorization.

256672308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21389366 (or 21389364 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 256672308 is about 16020.9958491974. The cubic root of 256672308 is about 635.5157799224.

The spelling of 256672308 in words is "two hundred fifty-six million, six hundred seventy-two thousand, three hundred eight".