117812840 has 16 divisors (see below), whose sum is σ = 265078980. Its totient is φ = 47125120.

The previous prime is 117812837. The next prime is 117812869. The reversal of 117812840 is 48218711.

It can be written as a sum of positive squares in 2 ways, for example, as 108534724 + 9278116 = 10418^2 + 3046^2 .

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 117812797 and 117812806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472621 + ... + 1472700.

Almost surely, 2^117812840 is an apocalyptic number.

117812840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117812840 is an abundant number, since it is smaller than the sum of its proper divisors (147266140).

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

117812840 is a wasteful number, since it uses less digits than its factorization.

117812840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945332 (or 2945328 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 117812840 is about 10854.1623352519. The cubic root of 117812840 is about 490.2273552733.

The spelling of 117812840 in words is "one hundred seventeen million, eight hundred twelve thousand, eight hundred forty".