117986220 has 144 divisors (see below), whose sum is σ = 405070848. Its totient is φ = 28589760.

The previous prime is 117986203. The next prime is 117986249. The reversal of 117986220 is 22689711.

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 47 ways as a sum of consecutive naturals, for example, 52357 + ... + 54563.

It is an arithmetic number, because the mean of its divisors is an integer number (2812992).

Almost surely, 2^117986220 is an apocalyptic number.

117986220 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 117986220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202535424).

117986220 is an abundant number, since it is smaller than the sum of its proper divisors (287084628).

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

117986220 is a wasteful number, since it uses less digits than its factorization.

117986220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 117986220 is about 10862.1461967698. The cubic root of 117986220 is about 490.4677194479.

The spelling of 117986220 in words is "one hundred seventeen million, nine hundred eighty-six thousand, two hundred twenty".