13223544 has 64 divisors (see below), whose sum is σ = 35596800. Its totient is φ = 4080384.

The previous prime is 13223527. The next prime is 13223549. The reversal of 13223544 is 44532231.

13223544 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13223549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21124 + ... + 21740.

It is an arithmetic number, because the mean of its divisors is an integer number (556200).

Almost surely, 2^13223544 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 13223544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17798400).

13223544 is an abundant number, since it is smaller than the sum of its proper divisors (22373256).

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

13223544 is a wasteful number, since it uses less digits than its factorization.

13223544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692 (or 688 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 13223544 is about 3636.4191177586. The cubic root of 13223544 is about 236.4735774363.

Adding to 13223544 its reverse (44532231), we get a palindrome (57755775).

The spelling of 13223544 in words is "thirteen million, two hundred twenty-three thousand, five hundred forty-four".