12791232 has 84 divisors (see below), whose sum is σ = 37444680. Its totient is φ = 4173312.

The previous prime is 12791231. The next prime is 12791249. The reversal of 12791232 is 23219721.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12791196 and 12791205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30319 + ... + 30737.

It is an arithmetic number, because the mean of its divisors is an integer number (445770).

Almost surely, 2^12791232 is an apocalyptic number.

12791232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12791232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18722340).

12791232 is an abundant number, since it is smaller than the sum of its proper divisors (24653448).

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

12791232 is a wasteful number, since it uses less digits than its factorization.

12791232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 477 counting only the distinct ones).

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

The square root of 12791232 is about 3576.4831888323. The cubic root of 12791232 is about 233.8679947993.

The spelling of 12791232 in words is "twelve million, seven hundred ninety-one thousand, two hundred thirty-two".