256165316 has 24 divisors (see below), whose sum is σ = 517811616. Its totient is φ = 109589120.

The previous prime is 256165241. The next prime is 256165331. The reversal of 256165316 is 613561652.

It is an unprimeable number.

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, 170486 + ... + 171981.

It is an arithmetic number, because the mean of its divisors is an integer number (21575484).

Almost surely, 2^256165316 is an apocalyptic number.

It is an amenable number.

256165316 is an abundant number, since it is smaller than the sum of its proper divisors (261646300).

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

256165316 is a wasteful number, since it uses less digits than its factorization.

256165316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342499 (or 342497 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

The square root of 256165316 is about 16005.1652912427. The cubic root of 256165316 is about 635.0970699147.

The spelling of 256165316 in words is "two hundred fifty-six million, one hundred sixty-five thousand, three hundred sixteen".