256922460 has 36 divisors (see below), whose sum is σ = 779332008. Its totient is φ = 68512608.

The previous prime is 256922453. The next prime is 256922507. The reversal of 256922460 is 64229652.

256922460 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 Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 713494 + ... + 713853.

Almost surely, 2^256922460 is an apocalyptic number.

256922460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256922460 is an abundant number, since it is smaller than the sum of its proper divisors (522409548).

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

256922460 is a wasteful number, since it uses less digits than its factorization.

256922460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427362 (or 1427357 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 256922460 is about 16028.8009532841. The cubic root of 256922460 is about 635.7221700948.

The spelling of 256922460 in words is "two hundred fifty-six million, nine hundred twenty-two thousand, four hundred sixty".