13722368 has 54 divisors (see below), whose sum is σ = 30175572. Its totient is φ = 6223360.

The previous prime is 13722361. The next prime is 13722403. The reversal of 13722368 is 86322731.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (13722361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30755 + ... + 31197.

Almost surely, 2^13722368 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 13722368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15087786).

13722368 is an abundant number, since it is smaller than the sum of its proper divisors (16453204).

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

13722368 is an equidigital number, since it uses as much as digits as its factorization.

13722368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 456 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 13722368 is about 3704.3714716535. The cubic root of 13722368 is about 239.4104046099.

13722368 divided by its sum of digits (32) gives a palindrome (428824).

The spelling of 13722368 in words is "thirteen million, seven hundred twenty-two thousand, three hundred sixty-eight".