12855512 has 16 divisors (see below), whose sum is σ = 24410400. Its totient is φ = 6346080.

The previous prime is 12855511. The next prime is 12855527. The reversal of 12855512 is 21555821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12855511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9539 + ... + 10802.

It is an arithmetic number, because the mean of its divisors is an integer number (1525650).

Almost surely, 2^12855512 is an apocalyptic number.

It is an amenable number.

12855512 is a deficient number, since it is larger than the sum of its proper divisors (11554888).

12855512 is a wasteful number, since it uses less digits than its factorization.

12855512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20426 (or 20422 counting only the distinct ones).

The product of its digits is 4000, while the sum is 29.

The square root of 12855512 is about 3585.4584086278. The cubic root of 12855512 is about 234.2590940265.

The spelling of 12855512 in words is "twelve million, eight hundred fifty-five thousand, five hundred twelve".