13904680 has 32 divisors (see below), whose sum is σ = 31509000. Its totient is φ = 5522176.

The previous prime is 13904669. The next prime is 13904687. The reversal of 13904680 is 8640931.

It can be written as a sum of positive squares in 4 ways, for example, as 7279204 + 6625476 = 2698^2 + 2574^2 .

It is not an unprimeable number, because it can be changed into a prime (13904687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4794 + ... + 7126.

Almost surely, 2^13904680 is an apocalyptic number.

13904680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13904680 is an abundant number, since it is smaller than the sum of its proper divisors (17604320).

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

13904680 is a wasteful number, since it uses less digits than its factorization.

13904680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493 (or 2489 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 13904680 is about 3728.8979605240. The cubic root of 13904680 is about 240.4659927740.

The spelling of 13904680 in words is "thirteen million, nine hundred four thousand, six hundred eighty".