12686032 has 20 divisors (see below), whose sum is σ = 25152160. Its totient is φ = 6195168.

The previous prime is 12686017. The next prime is 12686039. The reversal of 12686032 is 23068621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686039) 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, 8532 + ... + 9907.

It is an arithmetic number, because the mean of its divisors is an integer number (1257608).

Almost surely, 2^12686032 is an apocalyptic number.

It is an amenable number.

12686032 is a deficient number, since it is larger than the sum of its proper divisors (12466128).

12686032 is a wasteful number, since it uses less digits than its factorization.

12686032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18490 (or 18484 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 12686032 is about 3561.7456394302. The cubic root of 12686032 is about 233.2250890218.

The spelling of 12686032 in words is "twelve million, six hundred eighty-six thousand, thirty-two".