117251220 has 24 divisors (see below), whose sum is σ = 328303584. Its totient is φ = 31266976.

The previous prime is 117251209. The next prime is 117251221. The reversal of 117251220 is 22152711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117251221) 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, 977034 + ... + 977153.

It is an arithmetic number, because the mean of its divisors is an integer number (13679316).

Almost surely, 2^117251220 is an apocalyptic number.

117251220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117251220 is an abundant number, since it is smaller than the sum of its proper divisors (211052364).

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

117251220 is a wasteful number, since it uses less digits than its factorization.

117251220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1954199 (or 1954197 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 117251220 is about 10828.2602480731. The cubic root of 117251220 is about 489.4471343164.

The spelling of 117251220 in words is "one hundred seventeen million, two hundred fifty-one thousand, two hundred twenty".