13683988 has 24 divisors (see below), whose sum is σ = 25421760. Its totient is φ = 6431040.

The previous prime is 13683977. The next prime is 13683991. The reversal of 13683988 is 88938631.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4168 + ... + 6688.

It is an arithmetic number, because the mean of its divisors is an integer number (1059240).

Almost surely, 2^13683988 is an apocalyptic number.

It is an amenable number.

13683988 is a deficient number, since it is larger than the sum of its proper divisors (11737772).

13683988 is a wasteful number, since it uses less digits than its factorization.

13683988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2607 (or 2605 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 13683988 is about 3699.1874783525. The cubic root of 13683988 is about 239.1869944048.

It can be divided in two parts, 1368 and 3988, that added together give a triangular number (5356 = T₁₀₃).

The spelling of 13683988 in words is "thirteen million, six hundred eighty-three thousand, nine hundred eighty-eight".