256513160 has 32 divisors (see below), whose sum is σ = 584115840. Its totient is φ = 101367744.

The previous prime is 256513141. The next prime is 256513171. The reversal of 256513160 is 61315652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35312 + ... + 41951.

It is an arithmetic number, because the mean of its divisors is an integer number (18253620).

Almost surely, 2^256513160 is an apocalyptic number.

256513160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256513160 is an abundant number, since it is smaller than the sum of its proper divisors (327602680).

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

256513160 is a wasteful number, since it uses less digits than its factorization.

256513160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77357 (or 77353 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 256513160 is about 16016.0282217534. The cubic root of 256513160 is about 635.3844036197.

The spelling of 256513160 in words is "two hundred fifty-six million, five hundred thirteen thousand, one hundred sixty".