13228732 has 24 divisors (see below), whose sum is σ = 25874352. Its totient is φ = 5865600.

The previous prime is 13228717. The next prime is 13228741. The reversal of 13228732 is 23782231.

It is a self number, because there is not a number n which added to its sum of digits gives 13228732.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1863 + ... + 5470.

It is an arithmetic number, because the mean of its divisors is an integer number (1078098).

Almost surely, 2^13228732 is an apocalyptic number.

It is an amenable number.

13228732 is a deficient number, since it is larger than the sum of its proper divisors (12645620).

13228732 is a wasteful number, since it uses less digits than its factorization.

13228732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7389 (or 7387 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 13228732 is about 3637.1323869224. The cubic root of 13228732 is about 236.5044986607.

The spelling of 13228732 in words is "thirteen million, two hundred twenty-eight thousand, seven hundred thirty-two".