108509920 has 96 divisors (see below), whose sum is σ = 268240896. Its totient is φ = 41433600.

The previous prime is 108509881. The next prime is 108509927. The reversal of 108509920 is 29905801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108509927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649677 + ... + 649843.

It is an arithmetic number, because the mean of its divisors is an integer number (2794176).

Almost surely, 2^108509920 is an apocalyptic number.

108509920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108509920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134120448).

108509920 is an abundant number, since it is smaller than the sum of its proper divisors (159730976).

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

108509920 is a wasteful number, since it uses less digits than its factorization.

108509920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 108509920 is about 10416.8094923542. The cubic root of 108509920 is about 476.9686275766.

The spelling of 108509920 in words is "one hundred eight million, five hundred nine thousand, nine hundred twenty".