117188808 has 128 divisors (see below), whose sum is σ = 342835200. Its totient is φ = 33004800.

The previous prime is 117188807. The next prime is 117188821. The reversal of 117188808 is 808881711.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 117188808.

It is not an unprimeable number, because it can be changed into a prime (117188807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305785 + ... + 306167.

It is an arithmetic number, because the mean of its divisors is an integer number (2678400).

Almost surely, 2^117188808 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 117188808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171417600).

117188808 is an abundant number, since it is smaller than the sum of its proper divisors (225646392).

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

117188808 is a wasteful number, since it uses less digits than its factorization.

117188808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 42.

The square root of 117188808 is about 10825.3779610691. The cubic root of 117188808 is about 489.3602758138.

The spelling of 117188808 in words is "one hundred seventeen million, one hundred eighty-eight thousand, eight hundred eight".