117188238 has 32 divisors (see below), whose sum is σ = 247472640. Its totient is φ = 36892800.

The previous prime is 117188207. The next prime is 117188263. The reversal of 117188238 is 832881711.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 117188196 and 117188205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40438 + ... + 43238.

It is an arithmetic number, because the mean of its divisors is an integer number (7733520).

Almost surely, 2^117188238 is an apocalyptic number.

117188238 is an abundant number, since it is smaller than the sum of its proper divisors (130284402).

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

117188238 is a wasteful number, since it uses less digits than its factorization.

117188238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192.

The product of its digits is 21504, while the sum is 39.

The square root of 117188238 is about 10825.3516340117. The cubic root of 117188238 is about 489.3594824052.

The spelling of 117188238 in words is "one hundred seventeen million, one hundred eighty-eight thousand, two hundred thirty-eight".