117208920 has 64 divisors (see below), whose sum is σ = 366923520. Its totient is φ = 29896064.

The previous prime is 117208919. The next prime is 117208939. The reversal of 117208920 is 29802711.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18474 + ... + 23993.

It is an arithmetic number, because the mean of its divisors is an integer number (5733180).

Almost surely, 2^117208920 is an apocalyptic number.

117208920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117208920 is an abundant number, since it is smaller than the sum of its proper divisors (249714600).

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

117208920 is a wasteful number, since it uses less digits than its factorization.

117208920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42504 (or 42500 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 117208920 is about 10826.3068495217. The cubic root of 117208920 is about 489.3882689616.

The spelling of 117208920 in words is "one hundred seventeen million, two hundred eight thousand, nine hundred twenty".