117281868 has 24 divisors (see below), whose sum is σ = 298536000. Its totient is φ = 35539920.

The previous prime is 117281867. The next prime is 117281869. The reversal of 117281868 is 868182711.

It is an interprime number because it is at equal distance from previous prime (117281867) and next prime (117281869).

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (117281863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444118 + ... + 444381.

It is an arithmetic number, because the mean of its divisors is an integer number (12439000).

Almost surely, 2^117281868 is an apocalyptic number.

It is an amenable number.

117281868 is an abundant number, since it is smaller than the sum of its proper divisors (181254132).

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

117281868 is a wasteful number, since it uses less digits than its factorization.

117281868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888517 (or 888515 counting only the distinct ones).

The product of its digits is 43008, while the sum is 42.

The square root of 117281868 is about 10829.6753413941. The cubic root of 117281868 is about 489.4897757177.

The spelling of 117281868 in words is "one hundred seventeen million, two hundred eighty-one thousand, eight hundred sixty-eight".