12644814 has 32 divisors (see below), whose sum is σ = 31127040. Its totient is φ = 3334752.

The previous prime is 12644809. The next prime is 12644831. The reversal of 12644814 is 41844621.

12644814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11034 + ... + 12125.

It is an arithmetic number, because the mean of its divisors is an integer number (972720).

Almost surely, 2^12644814 is an apocalyptic number.

12644814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12644814 is an abundant number, since it is smaller than the sum of its proper divisors (18482226).

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

12644814 is a wasteful number, since it uses less digits than its factorization.

12644814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23184.

The product of its digits is 6144, while the sum is 30.

The square root of 12644814 is about 3555.9547241212. The cubic root of 12644814 is about 232.9722255632.

The spelling of 12644814 in words is "twelve million, six hundred forty-four thousand, eight hundred fourteen".