117990208 has 56 divisors (see below), whose sum is σ = 270288512. Its totient is φ = 50056704.

The previous prime is 117990203. The next prime is 117990263. The reversal of 117990208 is 802099711.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117990203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44866 + ... + 47422.

Almost surely, 2^117990208 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 117990208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135144256).

117990208 is an abundant number, since it is smaller than the sum of its proper divisors (152298304).

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

117990208 is a wasteful number, since it uses less digits than its factorization.

117990208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2679 (or 2669 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 117990208 is about 10862.3297685165. The cubic root of 117990208 is about 490.4732454130.

The spelling of 117990208 in words is "one hundred seventeen million, nine hundred ninety thousand, two hundred eight".