13224432 has 40 divisors (see below), whose sum is σ = 36792784. Its totient is φ = 4068864.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224432 is 23442231.

13224432 = 54² + 55² + ... + 341².

13224432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 13224399 and 13224408.

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, 9973 + ... + 11220.

Almost surely, 2^13224432 is an apocalyptic number.

13224432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13224432 is an abundant number, since it is smaller than the sum of its proper divisors (23568352).

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

13224432 is a wasteful number, since it uses less digits than its factorization.

13224432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21217 (or 21211 counting only the distinct ones).

The product of its digits is 1152, while the sum is 21.

The square root of 13224432 is about 3636.5412138459. The cubic root of 13224432 is about 236.4788706173.

Adding to 13224432 its reverse (23442231), we get a palindrome (36666663).

The spelling of 13224432 in words is "thirteen million, two hundred twenty-four thousand, four hundred thirty-two".