13878922 has 16 divisors (see below), whose sum is σ = 21552840. Its totient is φ = 6702624.

The previous prime is 13878883. The next prime is 13878923. The reversal of 13878922 is 22987831.

13878922 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13830961 + 47961 = 3719^2 + 219^2 .

It is not an unprimeable number, because it can be changed into a prime (13878923) 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, 101238 + ... + 101374.

Almost surely, 2^13878922 is an apocalyptic number.

13878922 is a deficient number, since it is larger than the sum of its proper divisors (7673918).

13878922 is an frugal number, since it uses more digits than its factorization.

13878922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 176 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 13878922 is about 3725.4425240500. The cubic root of 13878922 is about 240.3174156602.

The spelling of 13878922 in words is "thirteen million, eight hundred seventy-eight thousand, nine hundred twenty-two".