13880928 has 24 divisors (see below), whose sum is σ = 36437688. Its totient is φ = 4626944.

The previous prime is 13880927. The next prime is 13880929. The reversal of 13880928 is 82908831.

13880928 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 (13880927) and next prime (13880929).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13880927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72201 + ... + 72392.

It is an arithmetic number, because the mean of its divisors is an integer number (1518237).

Almost surely, 2^13880928 is an apocalyptic number.

It is an amenable number.

13880928 is an abundant number, since it is smaller than the sum of its proper divisors (22556760).

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

13880928 is a wasteful number, since it uses less digits than its factorization.

13880928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144606 (or 144598 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 13880928 is about 3725.7117440833. The cubic root of 13880928 is about 240.3289932527.

The spelling of 13880928 in words is "thirteen million, eight hundred eighty thousand, nine hundred twenty-eight".