108389988 has 60 divisors (see below), whose sum is σ = 323838592. Its totient is φ = 30967920.

The previous prime is 108389959. The next prime is 108389989. The reversal of 108389988 is 889983801.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (108389989) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21628 + ... + 26163.

Almost surely, 2^108389988 is an apocalyptic number.

108389988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

108389988 is an abundant number, since it is smaller than the sum of its proper divisors (215448604).

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

108389988 is a wasteful number, since it uses less digits than its factorization.

108389988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47814 (or 47803 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 108389988 is about 10411.0512437506. The cubic root of 108389988 is about 476.7928375367.

The spelling of 108389988 in words is "one hundred eight million, three hundred eighty-nine thousand, nine hundred eighty-eight".