117817884 has 36 divisors (see below), whose sum is σ = 298397736. Its totient is φ = 39196128.

The previous prime is 117817877. The next prime is 117817913. The reversal of 117817884 is 488718711.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17362 + ... + 23174.

It is an arithmetic number, because the mean of its divisors is an integer number (8288826).

Almost surely, 2^117817884 is an apocalyptic number.

It is an amenable number.

117817884 is an abundant number, since it is smaller than the sum of its proper divisors (180579852).

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

117817884 is a wasteful number, since it uses less digits than its factorization.

117817884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386 (or 6381 counting only the distinct ones).

The product of its digits is 100352, while the sum is 45.

The square root of 117817884 is about 10854.3946860246. The cubic root of 117817884 is about 490.2343513174.

The spelling of 117817884 in words is "one hundred seventeen million, eight hundred seventeen thousand, eight hundred eighty-four".