12744644 has 24 divisors (see below), whose sum is σ = 24493728. Its totient is φ = 5754240.

The previous prime is 12744629. The next prime is 12744647. The reversal of 12744644 is 44644721.

12744644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 12744644.

It is not an unprimeable number, because it can be changed into a prime (12744647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6284 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (1020572).

Almost surely, 2^12744644 is an apocalyptic number.

It is an amenable number.

12744644 is a deficient number, since it is larger than the sum of its proper divisors (11749084).

12744644 is a wasteful number, since it uses less digits than its factorization.

12744644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1953 counting only the distinct ones).

The product of its digits is 21504, while the sum is 32.

The square root of 12744644 is about 3569.9641454782. The cubic root of 12744644 is about 233.5837194274.

The spelling of 12744644 in words is "twelve million, seven hundred forty-four thousand, six hundred forty-four".