12991682 has 16 divisors (see below), whose sum is σ = 21621600. Its totient is φ = 5804640.

The previous prime is 12991679. The next prime is 12991703. The reversal of 12991682 is 28619921.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3707 + ... + 6302.

It is an arithmetic number, because the mean of its divisors is an integer number (1351350).

Almost surely, 2^12991682 is an apocalyptic number.

12991682 is a deficient number, since it is larger than the sum of its proper divisors (8629918).

12991682 is a wasteful number, since it uses less digits than its factorization.

12991682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10081.

The product of its digits is 15552, while the sum is 38.

The square root of 12991682 is about 3604.3975918314. The cubic root of 12991682 is about 235.0833083237.

The spelling of 12991682 in words is "twelve million, nine hundred ninety-one thousand, six hundred eighty-two".