13988716 has 36 divisors (see below), whose sum is σ = 28728000. Its totient is φ = 5942496.

The previous prime is 13988713. The next prime is 13988783. The reversal of 13988716 is 61788931.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13988713) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28965 + ... + 29443.

It is an arithmetic number, because the mean of its divisors is an integer number (798000).

Almost surely, 2^13988716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13988716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14364000).

13988716 is an abundant number, since it is smaller than the sum of its proper divisors (14739284).

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

13988716 is a wasteful number, since it uses less digits than its factorization.

13988716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646 (or 637 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 13988716 is about 3740.1491948851. The cubic root of 13988716 is about 240.9494565241.

The spelling of 13988716 in words is "thirteen million, nine hundred eighty-eight thousand, seven hundred sixteen".