13224556 has 24 divisors (see below), whose sum is σ = 23842224. Its totient is φ = 6415680.

The previous prime is 13224539. The next prime is 13224559. The reversal of 13224556 is 65542231.

13224556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13224559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19926 + ... + 20578.

It is an arithmetic number, because the mean of its divisors is an integer number (993426).

Almost surely, 2^13224556 is an apocalyptic number.

It is an amenable number.

13224556 is a deficient number, since it is larger than the sum of its proper divisors (10617668).

13224556 is a wasteful number, since it uses less digits than its factorization.

13224556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801 (or 799 counting only the distinct ones).

The product of its digits is 7200, while the sum is 28.

The square root of 13224556 is about 3636.5582629734. The cubic root of 13224556 is about 236.4796097363.

Adding to 13224556 its reverse (65542231), we get a palindrome (78766787).

The spelling of 13224556 in words is "thirteen million, two hundred twenty-four thousand, five hundred fifty-six".