12389688 has 24 divisors (see below), whose sum is σ = 33555600. Its totient is φ = 4129872.

The previous prime is 12389687. The next prime is 12389693. The reversal of 12389688 is 88698321.

12389688 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12389681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85968 + ... + 86111.

It is an arithmetic number, because the mean of its divisors is an integer number (1398150).

Almost surely, 2^12389688 is an apocalyptic number.

12389688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12389688 is an abundant number, since it is smaller than the sum of its proper divisors (21165912).

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

12389688 is a wasteful number, since it uses less digits than its factorization.

12389688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172091 (or 172084 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12389688 is about 3519.8988621834. The cubic root of 12389688 is about 231.3947262544.

The spelling of 12389688 in words is "twelve million, three hundred eighty-nine thousand, six hundred eighty-eight".