12687628 has 12 divisors (see below), whose sum is σ = 23168880. Its totient is φ = 6067952.

The previous prime is 12687613. The next prime is 12687659. The reversal of 12687628 is 82678621.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68863 + ... + 69046.

It is an arithmetic number, because the mean of its divisors is an integer number (1930740).

Almost surely, 2^12687628 is an apocalyptic number.

It is an amenable number.

12687628 is a deficient number, since it is larger than the sum of its proper divisors (10481252).

12687628 is a wasteful number, since it uses less digits than its factorization.

12687628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137936 (or 137934 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 12687628 is about 3561.9696798260. The cubic root of 12687628 is about 233.2348691126.

The spelling of 12687628 in words is "twelve million, six hundred eighty-seven thousand, six hundred twenty-eight".