108439920 has 60 divisors (see below), whose sum is σ = 364179816. Its totient is φ = 28917120.

The previous prime is 108439913. The next prime is 108439931. The reversal of 108439920 is 29934801.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74586 + ... + 76025.

Almost surely, 2^108439920 is an apocalyptic number.

108439920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108439920 is an abundant number, since it is smaller than the sum of its proper divisors (255739896).

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

108439920 is a wasteful number, since it uses less digits than its factorization.

108439920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150630 (or 150621 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 108439920 is about 10413.4489963700. The cubic root of 108439920 is about 476.8660409927.

The spelling of 108439920 in words is "one hundred eight million, four hundred thirty-nine thousand, nine hundred twenty".