117783812 has 12 divisors (see below), whose sum is σ = 216970320. Its totient is φ = 55792296.

The previous prime is 117783811. The next prime is 117783823. The reversal of 117783812 is 218387711.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (117783811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 774818 + ... + 774969.

It is an arithmetic number, because the mean of its divisors is an integer number (18080860).

Almost surely, 2^117783812 is an apocalyptic number.

It is an amenable number.

117783812 is a deficient number, since it is larger than the sum of its proper divisors (99186508).

117783812 is a wasteful number, since it uses less digits than its factorization.

117783812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549810 (or 1549808 counting only the distinct ones).

The product of its digits is 18816, while the sum is 38.

The square root of 117783812 is about 10852.8250699991. The cubic root of 117783812 is about 490.1870894625.

The spelling of 117783812 in words is "one hundred seventeen million, seven hundred eighty-three thousand, eight hundred twelve".