13888746 has 20 divisors (see below), whose sum is σ = 31121442. Its totient is φ = 4629528.

The previous prime is 13888723. The next prime is 13888759. The reversal of 13888746 is 64788831.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 4247721 = 3105^2 + 2061^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42705 + ... + 43028.

Almost surely, 2^13888746 is an apocalyptic number.

13888746 is an abundant number, since it is smaller than the sum of its proper divisors (17232696).

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

13888746 is an equidigital number, since it uses as much as digits as its factorization.

13888746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85747 (or 85738 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 13888746 is about 3726.7607918942. The cubic root of 13888746 is about 240.3741040560.

The spelling of 13888746 in words is "thirteen million, eight hundred eighty-eight thousand, seven hundred forty-six".