117818020 has 24 divisors (see below), whose sum is σ = 247774968. Its totient is φ = 47059200.

The previous prime is 117818009. The next prime is 117818047. The reversal of 117818020 is 20818711.

It can be written as a sum of positive squares in 4 ways, for example, as 4778596 + 113039424 = 2186^2 + 10632^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 117818020.

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 7 ways as a sum of consecutive naturals, for example, 11350 + ... + 19090.

It is an arithmetic number, because the mean of its divisors is an integer number (10323957).

Almost surely, 2^117818020 is an apocalyptic number.

117818020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117818020 is an abundant number, since it is smaller than the sum of its proper divisors (129956948).

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

117818020 is a wasteful number, since it uses less digits than its factorization.

117818020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8511 (or 8509 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 117818020 is about 10854.4009507665. The cubic root of 117818020 is about 490.2345399471.

The spelling of 117818020 in words is "one hundred seventeen million, eight hundred eighteen thousand, twenty".