256512996 has 36 divisors (see below), whose sum is σ = 682536400. Its totient is φ = 81003888.

The previous prime is 256512973. The next prime is 256513001. The reversal of 256512996 is 699215652.

It is a happy number.

256512996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186826 + ... + 188193.

Almost surely, 2^256512996 is an apocalyptic number.

It is an amenable number.

256512996 is an abundant number, since it is smaller than the sum of its proper divisors (426023404).

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

256512996 is a wasteful number, since it uses less digits than its factorization.

256512996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375048 (or 375043 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 256512996 is about 16016.0231018814. The cubic root of 256512996 is about 635.3842682101.

The spelling of 256512996 in words is "two hundred fifty-six million, five hundred twelve thousand, nine hundred ninety-six".