12638944 has 12 divisors (see below), whose sum is σ = 24882984. Its totient is φ = 6319456.

The previous prime is 12638909. The next prime is 12638953. The reversal of 12638944 is 44983621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197452 + ... + 197515.

It is an arithmetic number, because the mean of its divisors is an integer number (2073582).

Almost surely, 2^12638944 is an apocalyptic number.

It is an amenable number.

12638944 is a deficient number, since it is larger than the sum of its proper divisors (12244040).

12638944 is an equidigital number, since it uses as much as digits as its factorization.

12638944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394977 (or 394969 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 12638944 is about 3555.1292522214. The cubic root of 12638944 is about 232.9361697110.

The spelling of 12638944 in words is "twelve million, six hundred thirty-eight thousand, nine hundred forty-four".