117912520 has 64 divisors (see below), whose sum is σ = 293466240. Its totient is φ = 42278400.

The previous prime is 117912511. The next prime is 117912547. The reversal of 117912520 is 25219711.

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 15 ways as a sum of consecutive naturals, for example, 30285 + ... + 33955.

It is an arithmetic number, because the mean of its divisors is an integer number (4585410).

Almost surely, 2^117912520 is an apocalyptic number.

117912520 is a gapful number since it is divisible by the number (10) 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 117912520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146733120).

117912520 is an abundant number, since it is smaller than the sum of its proper divisors (175553720).

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

117912520 is a wasteful number, since it uses less digits than its factorization.

117912520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766 (or 3762 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 117912520 is about 10858.7531512600. The cubic root of 117912520 is about 490.3655747510.

The spelling of 117912520 in words is "one hundred seventeen million, nine hundred twelve thousand, five hundred twenty".