108817992 has 80 divisors (see below), whose sum is σ = 306342960. Its totient is φ = 36088416.

The previous prime is 108817949. The next prime is 108818009. The reversal of 108817992 is 299718801.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 198663 + ... + 199209.

It is an arithmetic number, because the mean of its divisors is an integer number (3829287).

Almost surely, 2^108817992 is an apocalyptic number.

108817992 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 108817992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153171480).

108817992 is an abundant number, since it is smaller than the sum of its proper divisors (197524968).

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

108817992 is a wasteful number, since it uses less digits than its factorization.

108817992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 108817992 is about 10431.5862648017. The cubic root of 108817992 is about 477.4195904548.

The spelling of 108817992 in words is "one hundred eight million, eight hundred seventeen thousand, nine hundred ninety-two".