13688316 has 18 divisors (see below), whose sum is σ = 34601112. Its totient is φ = 4562760.

The previous prime is 13688299. The next prime is 13688317. The reversal of 13688316 is 61388631.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 380231 = 13688316 / (1 + 3 + 6 + 8 + 8 + 3 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13688317) 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, 190080 + ... + 190151.

It is an arithmetic number, because the mean of its divisors is an integer number (1922284).

Almost surely, 2^13688316 is an apocalyptic number.

It is an amenable number.

13688316 is an abundant number, since it is smaller than the sum of its proper divisors (20912796).

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

13688316 is a wasteful number, since it uses less digits than its factorization.

13688316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380241 (or 380236 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 13688316 is about 3699.7724254338. The cubic root of 13688316 is about 239.2122085990.

The spelling of 13688316 in words is "thirteen million, six hundred eighty-eight thousand, three hundred sixteen".