13224756 has 12 divisors (see below), whose sum is σ = 30857792. Its totient is φ = 4408248.

The previous prime is 13224751. The next prime is 13224763. The reversal of 13224756 is 65742231.

13224756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224751) 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, 551020 + ... + 551043.

Almost surely, 2^13224756 is an apocalyptic number.

It is an amenable number.

13224756 is an abundant number, since it is smaller than the sum of its proper divisors (17633036).

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

13224756 is a wasteful number, since it uses less digits than its factorization.

13224756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102070 (or 1102068 counting only the distinct ones).

The product of its digits is 10080, while the sum is 30.

The square root of 13224756 is about 3636.5857613976. The cubic root of 13224756 is about 236.4808018541.

Adding to 13224756 its reverse (65742231), we get a palindrome (78966987).

The spelling of 13224756 in words is "thirteen million, two hundred twenty-four thousand, seven hundred fifty-six".