117858 has 16 divisors (see below), whose sum is σ = 254016. Its totient is φ = 36240.

The previous prime is 117851. The next prime is 117877. The reversal of 117858 is 858711.

It is not an unprimeable number, because it can be changed into a prime (117851) by changing a digit.

117858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678 + ... + 833.

It is an arithmetic number, because the mean of its divisors is an integer number (15876).

2¹¹⁷⁸⁵⁸ is an apocalyptic number.

117858 is an abundant number, since it is smaller than the sum of its proper divisors (136158).

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

117858 is a wasteful number, since it uses less digits than its factorization.

117858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529.

The product of its digits is 2240, while the sum is 30.

The square root of 117858 is about 343.3045295361. The cubic root of 117858 is about 49.0289985230.

The spelling of 117858 in words is "one hundred seventeen thousand, eight hundred fifty-eight".