117858312 has 96 divisors (see below), whose sum is σ = 375036480. Its totient is φ = 32964480.

The previous prime is 117858241. The next prime is 117858317. The reversal of 117858312 is 213858711.

117858312 is a `hidden beast` number, since 1 + 1 + 78 + 583 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (117858317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4573 + ... + 16019.

It is an arithmetic number, because the mean of its divisors is an integer number (3906630).

Almost surely, 2^117858312 is an apocalyptic number.

117858312 is a gapful number since it is divisible by the number (12) 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 117858312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187518240).

117858312 is an abundant number, since it is smaller than the sum of its proper divisors (257178168).

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

117858312 is a wasteful number, since it uses less digits than its factorization.

117858312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11483 (or 11476 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 117858312 is about 10856.2568134694. The cubic root of 117858312 is about 490.2904178703.

The spelling of 117858312 in words is "one hundred seventeen million, eight hundred fifty-eight thousand, three hundred twelve".