256414660 has 24 divisors (see below), whose sum is σ = 540852480. Its totient is φ = 102112224.

The previous prime is 256414619. The next prime is 256414661. The reversal of 256414660 is 66414652.

It is not an unprimeable number, because it can be changed into a prime (256414661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23700 + ... + 32779.

It is an arithmetic number, because the mean of its divisors is an integer number (22535520).

Almost surely, 2^256414660 is an apocalyptic number.

256414660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256414660 is an abundant number, since it is smaller than the sum of its proper divisors (284437820).

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

256414660 is a wasteful number, since it uses less digits than its factorization.

256414660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56715 (or 56713 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 256414660 is about 16012.9528819640. The cubic root of 256414660 is about 635.3030648737.

The spelling of 256414660 in words is "two hundred fifty-six million, four hundred fourteen thousand, six hundred sixty".