12818944 has 20 divisors (see below), whose sum is σ = 25613874. Its totient is φ = 6409216.

The previous prime is 12818941. The next prime is 12818959. The reversal of 12818944 is 44981821.

It can be written as a sum of positive squares in only one way, i.e., 10969344 + 1849600 = 3312^2 + 1360^2 .

It is not an unprimeable number, because it can be changed into a prime (12818941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12007 + ... + 13030.

Almost surely, 2^12818944 is an apocalyptic number.

It is an amenable number.

12818944 is a deficient number, since it is larger than the sum of its proper divisors (12794930).

12818944 is an frugal number, since it uses more digits than its factorization.

12818944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25055 (or 25039 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 12818944 is about 3580.3552896326. The cubic root of 12818944 is about 234.0367634059.

The spelling of 12818944 in words is "twelve million, eight hundred eighteen thousand, nine hundred forty-four".