12686016 has 56 divisors (see below), whose sum is σ = 38364160. Its totient is φ = 3624192.

The previous prime is 12685991. The next prime is 12686017. The reversal of 12686016 is 61068621.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (12686017) 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, 3376 + ... + 6063.

Almost surely, 2^12686016 is an apocalyptic number.

12686016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12686016 is an abundant number, since it is smaller than the sum of its proper divisors (25678144).

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

12686016 is an equidigital number, since it uses as much as digits as its factorization.

12686016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9461 (or 9451 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12686016 is about 3561.7433933398. The cubic root of 12686016 is about 233.2249909716.

The spelling of 12686016 in words is "twelve million, six hundred eighty-six thousand, sixteen".