13718816 has 24 divisors (see below), whose sum is σ = 27318060. Its totient is φ = 6780928.

The previous prime is 13718801. The next prime is 13718819. The reversal of 13718816 is 61881731.

It can be written as a sum of positive squares in 2 ways, for example, as 11587216 + 2131600 = 3404^2 + 1460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13718819) 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, 440 + ... + 5256.

Almost surely, 2^13718816 is an apocalyptic number.

13718816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13718816 is a deficient number, since it is larger than the sum of its proper divisors (13599244).

13718816 is an equidigital number, since it uses as much as digits as its factorization.

13718816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4916 (or 4908 counting only the distinct ones).

The product of its digits is 8064, while the sum is 35.

The square root of 13718816 is about 3703.8920070650. The cubic root of 13718816 is about 239.3897459029.

The spelling of 13718816 in words is "thirteen million, seven hundred eighteen thousand, eight hundred sixteen".