117816 has 16 divisors (see below), whose sum is σ = 294600. Its totient is φ = 39264.

The previous prime is 117811. The next prime is 117833. The reversal of 117816 is 618711.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 4909 = 117816 / (1 + 1 + 7 + 8 + 1 + 6).

It is a zygodrome in base 2.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 117816.

It is not an unprimeable number, because it can be changed into a prime (117811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2431 + ... + 2478.

2¹¹⁷⁸¹⁶ is an apocalyptic number.

It is an amenable number.

117816 is an abundant number, since it is smaller than the sum of its proper divisors (176784).

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

117816 is a wasteful number, since it uses less digits than its factorization.

117816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4918 (or 4914 counting only the distinct ones).

The product of its digits is 336, while the sum is 24.

The square root of 117816 is about 343.2433539051. The cubic root of 117816 is about 49.0231738227.

The spelling of 117816 in words is "one hundred seventeen thousand, eight hundred sixteen".