13791216 has 40 divisors (see below), whose sum is σ = 37725264. Its totient is φ = 4326400.

The previous prime is 13791209. The next prime is 13791221. The reversal of 13791216 is 61219731.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 7635 + ... + 9266.

Almost surely, 2^13791216 is an apocalyptic number.

13791216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13791216 is an abundant number, since it is smaller than the sum of its proper divisors (23934048).

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

13791216 is a wasteful number, since it uses less digits than its factorization.

13791216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929 (or 16923 counting only the distinct ones).

The product of its digits is 2268, while the sum is 30.

The square root of 13791216 is about 3713.6526493467. The cubic root of 13791216 is about 239.8101276027.

The spelling of 13791216 in words is "thirteen million, seven hundred ninety-one thousand, two hundred sixteen".