12856856 has 8 divisors (see below), whose sum is σ = 24106620. Its totient is φ = 6428424.

The previous prime is 12856849. The next prime is 12856859. The reversal of 12856856 is 65865821.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12856859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803546 + ... + 803561.

Almost surely, 2^12856856 is an apocalyptic number.

It is an amenable number.

12856856 is a deficient number, since it is larger than the sum of its proper divisors (11249764).

12856856 is a wasteful number, since it uses less digits than its factorization.

12856856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607113 (or 1607109 counting only the distinct ones).

The product of its digits is 115200, while the sum is 41.

The square root of 12856856 is about 3585.6458274626. The cubic root of 12856856 is about 234.2672574055.

The spelling of 12856856 in words is "twelve million, eight hundred fifty-six thousand, eight hundred fifty-six".