13222528 has 32 divisors (see below), whose sum is σ = 28739520. Its totient is φ = 6009600.

The previous prime is 13222511. The next prime is 13222553. The reversal of 13222528 is 82522231.

It is a tau number, because it is divible by the number of its divisors (32).

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, 3288 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (898110).

Almost surely, 2^13222528 is an apocalyptic number.

It is an amenable number.

13222528 is an abundant number, since it is smaller than the sum of its proper divisors (15516992).

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

13222528 is an equidigital number, since it uses as much as digits as its factorization.

13222528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416 (or 9404 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 13222528 is about 3636.2794172065. The cubic root of 13222528 is about 236.4675209835.

Adding to 13222528 its reverse (82522231), we get a palindrome (95744759).

The spelling of 13222528 in words is "thirteen million, two hundred twenty-two thousand, five hundred twenty-eight".