13215232 has 40 divisors (see below), whose sum is σ = 26958096. Its totient is φ = 6469632.

The previous prime is 13215229. The next prime is 13215247. The reversal of 13215232 is 23251231.

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, 26893 + ... + 27379.

Almost surely, 2^13215232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13215232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13479048).

13215232 is an abundant number, since it is smaller than the sum of its proper divisors (13742864).

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

13215232 is an frugal number, since it uses more digits than its factorization.

13215232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558 (or 542 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 13215232 is about 3635.2760555424. The cubic root of 13215232 is about 236.4240198604.

Adding to 13215232 its reverse (23251231), we get a palindrome (36466463).

The spelling of 13215232 in words is "thirteen million, two hundred fifteen thousand, two hundred thirty-two".