12644922 has 16 divisors (see below), whose sum is σ = 25403040. Its totient is φ = 4196112.

The previous prime is 12644921. The next prime is 12644941. The reversal of 12644922 is 22944621.

It is a self number, because there is not a number n which added to its sum of digits gives 12644922.

It is not an unprimeable number, because it can be changed into a prime (12644921) 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 7 ways as a sum of consecutive naturals, for example, 3228 + ... + 5975.

It is an arithmetic number, because the mean of its divisors is an integer number (1587690).

Almost surely, 2^12644922 is an apocalyptic number.

12644922 is an abundant number, since it is smaller than the sum of its proper divisors (12758118).

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

12644922 is a wasteful number, since it uses less digits than its factorization.

12644922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9437.

The product of its digits is 6912, while the sum is 30.

The square root of 12644922 is about 3555.9699098839. The cubic root of 12644922 is about 232.9728888372.

The spelling of 12644922 in words is "twelve million, six hundred forty-four thousand, nine hundred twenty-two".