12686416 has 40 divisors (see below), whose sum is σ = 25444800. Its totient is φ = 6124800.

The previous prime is 12686393. The next prime is 12686417. The reversal of 12686416 is 61468621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83941 + ... + 84091.

It is an arithmetic number, because the mean of its divisors is an integer number (636120).

Almost surely, 2^12686416 is an apocalyptic number.

12686416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12686416 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12686416 is a wasteful number, since it uses less digits than its factorization.

12686416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 301 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 12686416 is about 3561.7995451738. The cubic root of 12686416 is about 233.2274422013.

The spelling of 12686416 in words is "twelve million, six hundred eighty-six thousand, four hundred sixteen".