12538668 has 12 divisors (see below), whose sum is σ = 29256920. Its totient is φ = 4179552.

The previous prime is 12538649. The next prime is 12538679. The reversal of 12538668 is 86683521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 522433 + ... + 522456.

Almost surely, 2^12538668 is an apocalyptic number.

It is an amenable number.

12538668 is an abundant number, since it is smaller than the sum of its proper divisors (16718252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12538668 is a wasteful number, since it uses less digits than its factorization.

12538668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044896 (or 1044894 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 12538668 is about 3540.9981643599. The cubic root of 12538668 is about 232.3185032849.

The spelling of 12538668 in words is "twelve million, five hundred thirty-eight thousand, six hundred sixty-eight".