12791216 has 20 divisors (see below), whose sum is σ = 24849600. Its totient is φ = 6378432.

The previous prime is 12791201. The next prime is 12791227. The reversal of 12791216 is 61219721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6830 + ... + 8498.

It is an arithmetic number, because the mean of its divisors is an integer number (1242480).

Almost surely, 2^12791216 is an apocalyptic number.

12791216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12791216 is a deficient number, since it is larger than the sum of its proper divisors (12058384).

12791216 is a wasteful number, since it uses less digits than its factorization.

12791216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156 (or 2150 counting only the distinct ones).

The product of its digits is 1512, while the sum is 29.

The square root of 12791216 is about 3576.4809519974. The cubic root of 12791216 is about 233.8678972874.

The spelling of 12791216 in words is "twelve million, seven hundred ninety-one thousand, two hundred sixteen".