256595130 has 192 divisors, whose sum is σ = 776355840. Its totient is φ = 58185600.

The previous prime is 256595123. The next prime is 256595159. The reversal of 256595130 is 31595652.

256595130 is a `hidden beast` number, since 2 + 56 + 595 + 13 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1343335 + ... + 1343525.

It is an arithmetic number, because the mean of its divisors is an integer number (4043520).

Almost surely, 2^256595130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256595130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (388177920).

256595130 is an abundant number, since it is smaller than the sum of its proper divisors (519760710).

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

256595130 is a wasteful number, since it uses less digits than its factorization.

256595130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 36.

The square root of 256595130 is about 16018.5870163382. The cubic root of 256595130 is about 635.4520764477.

The spelling of 256595130 in words is "two hundred fifty-six million, five hundred ninety-five thousand, one hundred thirty".