108721092 has 96 divisors (see below), whose sum is σ = 278175744. Its totient is φ = 32947200.

The previous prime is 108721079. The next prime is 108721111. The reversal of 108721092 is 290127801.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 829867 + ... + 829997.

It is an arithmetic number, because the mean of its divisors is an integer number (2897664).

Almost surely, 2^108721092 is an apocalyptic number.

108721092 is a gapful number since it is divisible by the number (12) 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 108721092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139087872).

108721092 is an abundant number, since it is smaller than the sum of its proper divisors (169454652).

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

108721092 is a wasteful number, since it uses less digits than its factorization.

108721092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 108721092 is about 10426.9406826739. The cubic root of 108721092 is about 477.2778378641.

Adding to 108721092 its reverse (290127801), we get a palindrome (398848893).

The spelling of 108721092 in words is "one hundred eight million, seven hundred twenty-one thousand, ninety-two".