12786856 has 32 divisors (see below), whose sum is σ = 25583040. Its totient is φ = 5970688.

The previous prime is 12786847. The next prime is 12786863. The reversal of 12786856 is 65868721.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22431 + ... + 22993.

It is an arithmetic number, because the mean of its divisors is an integer number (799470).

Almost surely, 2^12786856 is an apocalyptic number.

It is an amenable number.

12786856 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12786856 is a wasteful number, since it uses less digits than its factorization.

12786856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 749 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 12786856 is about 3575.8713623395. The cubic root of 12786856 is about 233.8413222819.

The spelling of 12786856 in words is "twelve million, seven hundred eighty-six thousand, eight hundred fifty-six".