12668144 has 20 divisors (see below), whose sum is σ = 25116696. Its totient is φ = 6186432.

The previous prime is 12668137. The next prime is 12668153. The reversal of 12668144 is 44186621.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12668144.

It is a congruent number.

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, 8519 + ... + 9894.

Almost surely, 2^12668144 is an apocalyptic number.

It is an amenable number.

12668144 is a deficient number, since it is larger than the sum of its proper divisors (12448552).

12668144 is a wasteful number, since it uses less digits than its factorization.

12668144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18464 (or 18458 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 12668144 is about 3559.2336253750. The cubic root of 12668144 is about 233.1154174078.

The spelling of 12668144 in words is "twelve million, six hundred sixty-eight thousand, one hundred forty-four".