13931960 has 32 divisors (see below), whose sum is σ = 35825760. Its totient is φ = 4776576.

The previous prime is 13931933. The next prime is 13931987. The reversal of 13931960 is 6913931.

13931960 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 (13931933) and next prime (13931987).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24599 + ... + 25158.

It is an arithmetic number, because the mean of its divisors is an integer number (1119555).

Almost surely, 2^13931960 is an apocalyptic number.

13931960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13931960 is an abundant number, since it is smaller than the sum of its proper divisors (21893800).

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

13931960 is a wasteful number, since it uses less digits than its factorization.

13931960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49775 (or 49771 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13931960 is about 3732.5540853416. The cubic root of 13931960 is about 240.6231491396.

The spelling of 13931960 in words is "thirteen million, nine hundred thirty-one thousand, nine hundred sixty".