117785772 has 96 divisors (see below), whose sum is σ = 336680960. Its totient is φ = 35380800.

The previous prime is 117785749. The next prime is 117785797. The reversal of 117785772 is 277587711.

It is a happy number.

117785772 is a `hidden beast` number, since 1 + 1 + 7 + 78 + 577 + 2 = 666.

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 31 ways as a sum of consecutive naturals, for example, 59397 + ... + 61347.

Almost surely, 2^117785772 is an apocalyptic number.

117785772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117785772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168340480).

117785772 is an abundant number, since it is smaller than the sum of its proper divisors (218895188).

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

117785772 is a wasteful number, since it uses less digits than its factorization.

117785772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020 (or 2012 counting only the distinct ones).

The product of its digits is 192080, while the sum is 45.

The square root of 117785772 is about 10852.9153686924. The cubic root of 117785772 is about 490.1898084591.

The spelling of 117785772 in words is "one hundred seventeen million, seven hundred eighty-five thousand, seven hundred seventy-two".