13224417 has 4 divisors (see below), whose sum is σ = 17632560. Its totient is φ = 8816276.

The previous prime is 13224391. The next prime is 13224457. The reversal of 13224417 is 71442231.

It is a happy number.

13224417 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 semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13224417 - 2¹⁵ = 13191649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13224457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2204067 + ... + 2204072.

It is an arithmetic number, because the mean of its divisors is an integer number (4408140).

Almost surely, 2^13224417 is an apocalyptic number.

It is an amenable number.

13224417 is a deficient number, since it is larger than the sum of its proper divisors (4408143).

13224417 is an equidigital number, since it uses as much as digits as its factorization.

13224417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408142.

The product of its digits is 1344, while the sum is 24.

The square root of 13224417 is about 3636.5391514461. The cubic root of 13224417 is about 236.4787812074.

Adding to 13224417 its reverse (71442231), we get a palindrome (84666648).

The spelling of 13224417 in words is "thirteen million, two hundred twenty-four thousand, four hundred seventeen".