12886642 has 16 divisors (see below), whose sum is σ = 19764864. Its totient is φ = 6300000.

The previous prime is 12886589. The next prime is 12886649. The reversal of 12886642 is 24668821.

It is not an unprimeable number, because it can be changed into a prime (12886649) 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, 21142 + ... + 21742.

It is an arithmetic number, because the mean of its divisors is an integer number (1235304).

Almost surely, 2^12886642 is an apocalyptic number.

12886642 is a deficient number, since it is larger than the sum of its proper divisors (6878222).

12886642 is a wasteful number, since it uses less digits than its factorization.

12886642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825.

The product of its digits is 36864, while the sum is 37.

The square root of 12886642 is about 3589.7969301898. The cubic root of 12886642 is about 234.4480300300.

The spelling of 12886642 in words is "twelve million, eight hundred eighty-six thousand, six hundred forty-two".