13989216 has 24 divisors (see below), whose sum is σ = 36721944. Its totient is φ = 4663040.

The previous prime is 13989193. The next prime is 13989229. The reversal of 13989216 is 61298931.

13989216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72765 + ... + 72956.

It is an arithmetic number, because the mean of its divisors is an integer number (1530081).

Almost surely, 2^13989216 is an apocalyptic number.

13989216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

13989216 is an abundant number, since it is smaller than the sum of its proper divisors (22732728).

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

13989216 is a wasteful number, since it uses less digits than its factorization.

13989216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145734 (or 145726 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 13989216 is about 3740.2160365412. The cubic root of 13989216 is about 240.9523272496.

The spelling of 13989216 in words is "thirteen million, nine hundred eighty-nine thousand, two hundred sixteen".