108138888 has 192 divisors, whose sum is σ = 357739200. Its totient is φ = 30170880.

The previous prime is 108138859. The next prime is 108138907. The reversal of 108138888 is 888831801.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 277798 + ... + 278186.

It is an arithmetic number, because the mean of its divisors is an integer number (1863225).

Almost surely, 2^108138888 is an apocalyptic number.

108138888 is a gapful number since it is divisible by the number (18) 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 108138888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178869600).

108138888 is an abundant number, since it is smaller than the sum of its proper divisors (249600312).

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

108138888 is a wasteful number, since it uses less digits than its factorization.

108138888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 418 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 45.

The square root of 108138888 is about 10398.9849504651. The cubic root of 108138888 is about 476.4243679203.

It can be divided in two parts, 10813 and 8888, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 108138888 in words is "one hundred eight million, one hundred thirty-eight thousand, eight hundred eighty-eight".