108105992 has 32 divisors (see below), whose sum is σ = 217582200. Its totient is φ = 50171904.

The previous prime is 108105983. The next prime is 108106007. The reversal of 108105992 is 299501801.

It can be written as a sum of positive squares in 4 ways, for example, as 81830116 + 26275876 = 9046^2 + 5126^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4484 + ... + 15372.

Almost surely, 2^108105992 is an apocalyptic number.

It is an amenable number.

108105992 is an abundant number, since it is smaller than the sum of its proper divisors (109476208).

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

108105992 is a wasteful number, since it uses less digits than its factorization.

108105992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10985 (or 10981 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 108105992 is about 10397.4031373223. The cubic root of 108105992 is about 476.3760533693.

The spelling of 108105992 in words is "one hundred eight million, one hundred five thousand, nine hundred ninety-two".