871268256 has 72 divisors (see below), whose sum is σ = 2608089120. Its totient is φ = 275135616.

The previous prime is 871268249. The next prime is 871268273. The reversal of 871268256 is 652862178.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74140 + ... + 85083.

It is an arithmetic number, because the mean of its divisors is an integer number (36223460).

Almost surely, 2^871268256 is an apocalyptic number.

It is an amenable number.

871268256 is an abundant number, since it is smaller than the sum of its proper divisors (1736820864).

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

871268256 is a wasteful number, since it uses less digits than its factorization.

871268256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159258 (or 159247 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 871268256 is about 29517.2535307742. The cubic root of 871268256 is about 955.1039262648.

The spelling of 871268256 in words is "eight hundred seventy-one million, two hundred sixty-eight thousand, two hundred fifty-six".