13891716 has 48 divisors (see below), whose sum is σ = 36220800. Its totient is φ = 4604256.

The previous prime is 13891699. The next prime is 13891721. The reversal of 13891716 is 61719831.

13891716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31425 + ... + 31863.

It is an arithmetic number, because the mean of its divisors is an integer number (754600).

Almost surely, 2^13891716 is an apocalyptic number.

It is an amenable number.

13891716 is an abundant number, since it is smaller than the sum of its proper divisors (22329084).

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

13891716 is a wasteful number, since it uses less digits than its factorization.

13891716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 737 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 13891716 is about 3727.1592399574. The cubic root of 13891716 is about 240.3912368772.

13891716 divided by its sum of digits (36) gives a triangular number (385881 = T₈₇₈).

The spelling of 13891716 in words is "thirteen million, eight hundred ninety-one thousand, seven hundred sixteen".