12189686 has 16 divisors (see below), whose sum is σ = 19180800. Its totient is φ = 5802048.

The previous prime is 12189677. The next prime is 12189703. The reversal of 12189686 is 68698121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2795 + ... + 5673.

It is an arithmetic number, because the mean of its divisors is an integer number (1198800).

Almost surely, 2^12189686 is an apocalyptic number.

12189686 is a deficient number, since it is larger than the sum of its proper divisors (6991114).

12189686 is a wasteful number, since it uses less digits than its factorization.

12189686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983.

The product of its digits is 41472, while the sum is 41.

The square root of 12189686 is about 3491.3730823274. The cubic root of 12189686 is about 230.1428602070.

The spelling of 12189686 in words is "twelve million, one hundred eighty-nine thousand, six hundred eighty-six".