12791322 has 24 divisors (see below), whose sum is σ = 27861600. Its totient is φ = 4241160.

The previous prime is 12791309. The next prime is 12791323. The reversal of 12791322 is 22319721.

It is not an unprimeable number, because it can be changed into a prime (12791323) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1797 + ... + 5367.

It is an arithmetic number, because the mean of its divisors is an integer number (1160900).

Almost surely, 2^12791322 is an apocalyptic number.

12791322 is an abundant number, since it is smaller than the sum of its proper divisors (15070278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12791322 is a wasteful number, since it uses less digits than its factorization.

12791322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3778 (or 3775 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12791322 is about 3576.4957710027. The cubic root of 12791322 is about 233.8685433018.

It can be divided in two parts, 1279 and 1322, that added together give a square (2601 = 51²).

The spelling of 12791322 in words is "twelve million, seven hundred ninety-one thousand, three hundred twenty-two".