13911880 has 64 divisors (see below), whose sum is σ = 33048000. Its totient is φ = 5263104.

The previous prime is 13911853. The next prime is 13911907. The reversal of 13911880 is 8811931.

It is an interprime number because it is at equal distance from previous prime (13911853) and next prime (13911907).

It is a congruent number.

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, 77631 + ... + 77809.

It is an arithmetic number, because the mean of its divisors is an integer number (516375).

Almost surely, 2^13911880 is an apocalyptic number.

13911880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13911880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16524000).

13911880 is an abundant number, since it is smaller than the sum of its proper divisors (19136120).

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

13911880 is a wasteful number, since it uses less digits than its factorization.

13911880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 13911880 is about 3729.8632682714. The cubic root of 13911880 is about 240.5074909457.

The spelling of 13911880 in words is "thirteen million, nine hundred eleven thousand, eight hundred eighty".