13878680 has 32 divisors (see below), whose sum is σ = 31957200. Its totient is φ = 5421696.

The previous prime is 13878673. The next prime is 13878691. The reversal of 13878680 is 8687831.

13878680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 2315 + ... + 5754.

Almost surely, 2^13878680 is an apocalyptic number.

13878680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13878680 is an abundant number, since it is smaller than the sum of its proper divisors (18078520).

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

13878680 is a wasteful number, since it uses less digits than its factorization.

13878680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8123 (or 8119 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 13878680 is about 3725.4100445454. The cubic root of 13878680 is about 240.3160188861.

The spelling of 13878680 in words is "thirteen million, eight hundred seventy-eight thousand, six hundred eighty".