12686904 has 24 divisors (see below), whose sum is σ = 34360560. Its totient is φ = 4228944.

The previous prime is 12686897. The next prime is 12686909. The reversal of 12686904 is 40968621.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686909) 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, 88032 + ... + 88175.

It is an arithmetic number, because the mean of its divisors is an integer number (1431690).

Almost surely, 2^12686904 is an apocalyptic number.

It is an amenable number.

12686904 is an abundant number, since it is smaller than the sum of its proper divisors (21673656).

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

12686904 is a wasteful number, since it uses less digits than its factorization.

12686904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176219 (or 176212 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 12686904 is about 3561.8680492124. The cubic root of 12686904 is about 233.2304326317.

The spelling of 12686904 in words is "twelve million, six hundred eighty-six thousand, nine hundred four".