13223504 has 40 divisors (see below), whose sum is σ = 30081408. Its totient is φ = 5512320.

The previous prime is 13223473. The next prime is 13223527. The reversal of 13223504 is 40532231.

It is a happy number.

It is a super-2 number, since 2×13223504² = 349722116076032, which contains 22 as substring.

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, 2549 + ... + 5739.

Almost surely, 2^13223504 is an apocalyptic number.

13223504 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13223504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15040704).

13223504 is an abundant number, since it is smaller than the sum of its proper divisors (16857904).

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

13223504 is a wasteful number, since it uses less digits than its factorization.

13223504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3243 (or 3237 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13223504 is about 3636.4136178383. The cubic root of 13223504 is about 236.4733389991.

Adding to 13223504 its reverse (40532231), we get a palindrome (53755735).

The spelling of 13223504 in words is "thirteen million, two hundred twenty-three thousand, five hundred four".