117830538 has 80 divisors (see below), whose sum is σ = 312238080. Its totient is φ = 32495904.

The previous prime is 117830527. The next prime is 117830563. The reversal of 117830538 is 835038711.

117830538 is a `hidden beast` number, since 117 + 8 + 3 + 0 + 538 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31095 + ... + 34677.

It is an arithmetic number, because the mean of its divisors is an integer number (3902976).

Almost surely, 2^117830538 is an apocalyptic number.

117830538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 117830538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156119040).

117830538 is an abundant number, since it is smaller than the sum of its proper divisors (194407542).

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

117830538 is a wasteful number, since it uses less digits than its factorization.

117830538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3633 (or 3624 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 117830538 is about 10854.9775679179. The cubic root of 117830538 is about 490.2519015772.

The spelling of 117830538 in words is "one hundred seventeen million, eight hundred thirty thousand, five hundred thirty-eight".