12889166 has 24 divisors (see below), whose sum is σ = 20485920. Its totient is φ = 6080256.

The previous prime is 12889159. The next prime is 12889169. The reversal of 12889166 is 66198821.

It is a super-2 number, since 2×12889166² = 332261200351112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12889169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132830 + ... + 132926.

It is an arithmetic number, because the mean of its divisors is an integer number (853580).

Almost surely, 2^12889166 is an apocalyptic number.

12889166 is a deficient number, since it is larger than the sum of its proper divisors (7596754).

12889166 is an equidigital number, since it uses as much as digits as its factorization.

12889166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 207 counting only the distinct ones).

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

The square root of 12889166 is about 3590.1484648967. The cubic root of 12889166 is about 234.4633354964.

The spelling of 12889166 in words is "twelve million, eight hundred eighty-nine thousand, one hundred sixty-six".