117828108 has 60 divisors (see below), whose sum is σ = 309188880. Its totient is φ = 39127968.

The previous prime is 117828049. The next prime is 117828119. The reversal of 117828108 is 801828711.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 115810 + ... + 116822.

It is an arithmetic number, because the mean of its divisors is an integer number (5153148).

Almost surely, 2^117828108 is an apocalyptic number.

117828108 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 117828108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154594440).

117828108 is an abundant number, since it is smaller than the sum of its proper divisors (191360772).

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

117828108 is a wasteful number, since it uses less digits than its factorization.

117828108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1388 (or 1377 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The square root of 117828108 is about 10854.8656371233. The cubic root of 117828108 is about 490.2485314256.

The spelling of 117828108 in words is "one hundred seventeen million, eight hundred twenty-eight thousand, one hundred eight".