13888816 has 10 divisors (see below), whose sum is σ = 26909612. Its totient is φ = 6944400.

The previous prime is 13888799. The next prime is 13888817. The reversal of 13888816 is 61888831.

It is not an unprimeable number, because it can be changed into a prime (13888817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 434010 + ... + 434041.

Almost surely, 2^13888816 is an apocalyptic number.

13888816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13888816 is a deficient number, since it is larger than the sum of its proper divisors (13020796).

13888816 is an equidigital number, since it uses as much as digits as its factorization.

13888816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868059 (or 868053 counting only the distinct ones).

The product of its digits is 73728, while the sum is 43.

The square root of 13888816 is about 3726.7701834162. The cubic root of 13888816 is about 240.3745078880.

The spelling of 13888816 in words is "thirteen million, eight hundred eighty-eight thousand, eight hundred sixteen".