108138984 has 16 divisors (see below), whose sum is σ = 270347520. Its totient is φ = 36046320.

The previous prime is 108138973. The next prime is 108138991. The reversal of 108138984 is 489831801.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2252872 + ... + 2252919.

It is an arithmetic number, because the mean of its divisors is an integer number (16896720).

Almost surely, 2^108138984 is an apocalyptic number.

It is an amenable number.

108138984 is an abundant number, since it is smaller than the sum of its proper divisors (162208536).

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

108138984 is a wasteful number, since it uses less digits than its factorization.

108138984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4505800 (or 4505796 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 108138984 is about 10398.9895662992. The cubic root of 108138984 is about 476.4245089017.

The spelling of 108138984 in words is "one hundred eight million, one hundred thirty-eight thousand, nine hundred eighty-four".