13888722 has 24 divisors (see below), whose sum is σ = 28281456. Its totient is φ = 4546408.

The previous prime is 13888669. The next prime is 13888723. The reversal of 13888722 is 22788831.

It is not an unprimeable number, because it can be changed into a prime (13888723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83083 + ... + 83249.

It is an arithmetic number, because the mean of its divisors is an integer number (1178394).

Almost surely, 2^13888722 is an apocalyptic number.

13888722 is an abundant number, since it is smaller than the sum of its proper divisors (14392734).

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

13888722 is an equidigital number, since it uses as much as digits as its factorization.

13888722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 255 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 13888722 is about 3726.7575719384. The cubic root of 13888722 is about 240.3739655990.

The spelling of 13888722 in words is "thirteen million, eight hundred eighty-eight thousand, seven hundred twenty-two".