256868652 has 24 divisors (see below), whose sum is σ = 615560176. Its totient is φ = 83308608.

The previous prime is 256868641. The next prime is 256868653.

256868652 is nontrivially palindromic in base 10.

256868652 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (256868653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288823 + ... + 289710.

Almost surely, 2^256868652 is an apocalyptic number.

It is an amenable number.

256868652 is an abundant number, since it is smaller than the sum of its proper divisors (358691524).

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

256868652 is a wasteful number, since it uses less digits than its factorization.

256868652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578577 (or 578575 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 48.

The square root of 256868652 is about 16027.1223867543. The cubic root of 256868652 is about 635.6777866300.

The spelling of 256868652 in words is "two hundred fifty-six million, eight hundred sixty-eight thousand, six hundred fifty-two".