13911980 has 12 divisors (see below), whose sum is σ = 29215200. Its totient is φ = 5564784.

The previous prime is 13911977. The next prime is 13911983. The reversal of 13911980 is 8911931.

13911980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (13911977) and next prime (13911983).

It is not an unprimeable number, because it can be changed into a prime (13911983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347780 + ... + 347819.

It is an arithmetic number, because the mean of its divisors is an integer number (2434600).

Almost surely, 2^13911980 is an apocalyptic number.

13911980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13911980 is an abundant number, since it is smaller than the sum of its proper divisors (15303220).

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

13911980 is a wasteful number, since it uses less digits than its factorization.

13911980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695608 (or 695606 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 13911980 is about 3729.8766735644. The cubic root of 13911980 is about 240.5080672084.

The spelling of 13911980 in words is "thirteen million, nine hundred eleven thousand, nine hundred eighty".