117921996 has 72 divisors (see below), whose sum is σ = 323026704. Its totient is φ = 36126720.

The previous prime is 117921971. The next prime is 117922019. The reversal of 117921996 is 699129711.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 24076 + ... + 28556.

It is an arithmetic number, because the mean of its divisors is an integer number (4486482).

Almost surely, 2^117921996 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 117921996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161513352).

117921996 is an abundant number, since it is smaller than the sum of its proper divisors (205104708).

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

117921996 is a wasteful number, since it uses less digits than its factorization.

117921996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551 (or 4546 counting only the distinct ones).

The product of its digits is 61236, while the sum is 45.

The square root of 117921996 is about 10859.1894725159. The cubic root of 117921996 is about 490.3787104206.

The spelling of 117921996 in words is "one hundred seventeen million, nine hundred twenty-one thousand, nine hundred ninety-six".