108138108 has 48 divisors (see below), whose sum is σ = 273741440. Its totient is φ = 33027264.

The previous prime is 108138103. The next prime is 108138109. The reversal of 108138108 is 801831801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108138103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19191 + ... + 24177.

Almost surely, 2^108138108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108138108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136870720).

108138108 is an abundant number, since it is smaller than the sum of its proper divisors (165603332).

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

108138108 is a wasteful number, since it uses less digits than its factorization.

108138108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146 (or 5144 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 30.

The square root of 108138108 is about 10398.9474467371. The cubic root of 108138108 is about 476.4232224431.

Adding to 108138108 its reverse (801831801), we get a palindrome (909969909).

The spelling of 108138108 in words is "one hundred eight million, one hundred thirty-eight thousand, one hundred eight".