12188868 has 12 divisors (see below), whose sum is σ = 28440720. Its totient is φ = 4062952.

The previous prime is 12188863. The next prime is 12188927. The reversal of 12188868 is 86888121.

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

It is not an unprimeable number, because it can be changed into a prime (12188863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507858 + ... + 507881.

It is an arithmetic number, because the mean of its divisors is an integer number (2370060).

Almost surely, 2^12188868 is an apocalyptic number.

It is an amenable number.

12188868 is an abundant number, since it is smaller than the sum of its proper divisors (16251852).

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

12188868 is a wasteful number, since it uses less digits than its factorization.

12188868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015746 (or 1015744 counting only the distinct ones).

The product of its digits is 49152, while the sum is 42.

The square root of 12188868 is about 3491.2559344740. The cubic root of 12188868 is about 230.1377121096.

The spelling of 12188868 in words is "twelve million, one hundred eighty-eight thousand, eight hundred sixty-eight".