12678712 has 16 divisors (see below), whose sum is σ = 23811840. Its totient is φ = 6328896.

The previous prime is 12678709. The next prime is 12678739. The reversal of 12678712 is 21787621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6793 + ... + 8455.

It is an arithmetic number, because the mean of its divisors is an integer number (1488240).

Almost surely, 2^12678712 is an apocalyptic number.

It is an amenable number.

12678712 is a deficient number, since it is larger than the sum of its proper divisors (11133128).

12678712 is a wasteful number, since it uses less digits than its factorization.

12678712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2622 (or 2618 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 12678712 is about 3560.7179051422. The cubic root of 12678712 is about 233.1802224547.

The spelling of 12678712 in words is "twelve million, six hundred seventy-eight thousand, seven hundred twelve".