12813872 has 20 divisors (see below), whose sum is σ = 25128600. Its totient is φ = 6329088.

The previous prime is 12813859. The next prime is 12813883. The reversal of 12813872 is 27831821.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3497 + ... + 6152.

It is an arithmetic number, because the mean of its divisors is an integer number (1256430).

Almost surely, 2^12813872 is an apocalyptic number.

It is an amenable number.

12813872 is a deficient number, since it is larger than the sum of its proper divisors (12314728).

12813872 is an equidigital number, since it uses as much as digits as its factorization.

12813872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9740 (or 9734 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 12813872 is about 3579.6469099619. The cubic root of 12813872 is about 234.0058926609.

The spelling of 12813872 in words is "twelve million, eight hundred thirteen thousand, eight hundred seventy-two".