13667984 has 20 divisors (see below), whose sum is σ = 28889520. Its totient is φ = 6212640.

The previous prime is 13667981. The next prime is 13667987. The reversal of 13667984 is 48976631.

It is an interprime number because it is at equal distance from previous prime (13667981) and next prime (13667987).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (13667981) 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, 38654 + ... + 39005.

It is an arithmetic number, because the mean of its divisors is an integer number (1444476).

Almost surely, 2^13667984 is an apocalyptic number.

It is an amenable number.

13667984 is an abundant number, since it is smaller than the sum of its proper divisors (15221536).

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

13667984 is a wasteful number, since it uses less digits than its factorization.

13667984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77678 (or 77672 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 13667984 is about 3697.0236677630. The cubic root of 13667984 is about 239.0937116097.

The spelling of 13667984 in words is "thirteen million, six hundred sixty-seven thousand, nine hundred eighty-four".