117858720 has 144 divisors (see below), whose sum is σ = 431954208. Its totient is φ = 26933760.

The previous prime is 117858709. The next prime is 117858749. The reversal of 117858720 is 27858711.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21015 + ... + 26025.

It is an arithmetic number, because the mean of its divisors is an integer number (2999682).

Almost surely, 2^117858720 is an apocalyptic number.

117858720 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 117858720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215977104).

117858720 is an abundant number, since it is smaller than the sum of its proper divisors (314095488).

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

117858720 is a wasteful number, since it uses less digits than its factorization.

117858720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043 (or 5028 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 39.

The square root of 117858720 is about 10856.2756044603. The cubic root of 117858720 is about 490.2909836295.

Subtracting from 117858720 its reverse (27858711), we obtain a palindrome (90000009).

The spelling of 117858720 in words is "one hundred seventeen million, eight hundred fifty-eight thousand, seven hundred twenty".