13928878 has 8 divisors (see below), whose sum is σ = 20941200. Its totient is φ = 6948480.

The previous prime is 13928867. The next prime is 13928891. The reversal of 13928878 is 87882931.

13928878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6858 + ... + 8653.

It is an arithmetic number, because the mean of its divisors is an integer number (2617650).

Almost surely, 2^13928878 is an apocalyptic number.

13928878 is a deficient number, since it is larger than the sum of its proper divisors (7012322).

13928878 is a wasteful number, since it uses less digits than its factorization.

13928878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15962.

The product of its digits is 193536, while the sum is 46.

The square root of 13928878 is about 3732.1412084754. The cubic root of 13928878 is about 240.6054044424.

The spelling of 13928878 in words is "thirteen million, nine hundred twenty-eight thousand, eight hundred seventy-eight".