12857636 has 24 divisors (see below), whose sum is σ = 24888864. Its totient is φ = 5762880.

The previous prime is 12857629. The next prime is 12857651. The reversal of 12857636 is 63675821.

It is a self number, because there is not a number n which added to its sum of digits gives 12857636.

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, 1211 + ... + 5213.

It is an arithmetic number, because the mean of its divisors is an integer number (1037036).

Almost surely, 2^12857636 is an apocalyptic number.

It is an amenable number.

12857636 is a deficient number, since it is larger than the sum of its proper divisors (12031228).

12857636 is a wasteful number, since it uses less digits than its factorization.

12857636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4089 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 12857636 is about 3585.7545928298. The cubic root of 12857636 is about 234.2719948200.

The spelling of 12857636 in words is "twelve million, eight hundred fifty-seven thousand, six hundred thirty-six".