256708460 has 24 divisors (see below), whose sum is σ = 539468160. Its totient is φ = 102610944.

The previous prime is 256708453. The next prime is 256708471. The reversal of 256708460 is 64807652.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31532 + ... + 38828.

It is an arithmetic number, because the mean of its divisors is an integer number (22477840).

Almost surely, 2^256708460 is an apocalyptic number.

256708460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256708460 is an abundant number, since it is smaller than the sum of its proper divisors (282759700).

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

256708460 is a wasteful number, since it uses less digits than its factorization.

256708460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9065 (or 9063 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 256708460 is about 16022.1240789104. The cubic root of 256708460 is about 635.5456157444.

The spelling of 256708460 in words is "two hundred fifty-six million, seven hundred eight thousand, four hundred sixty".