117765180 has 144 divisors (see below), whose sum is σ = 391678560. Its totient is φ = 28463616.

The previous prime is 117765169. The next prime is 117765217. The reversal of 117765180 is 81567711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 137634 + ... + 138486.

It is an arithmetic number, because the mean of its divisors is an integer number (2719990).

Almost surely, 2^117765180 is an apocalyptic number.

117765180 is a gapful number since it is divisible by the number (10) 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 117765180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195839280).

117765180 is an abundant number, since it is smaller than the sum of its proper divisors (273913380).

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

117765180 is a wasteful number, since it uses less digits than its factorization.

117765180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940 (or 935 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

The square root of 117765180 is about 10851.9666420424. The cubic root of 117765180 is about 490.1612408411.

The spelling of 117765180 in words is "one hundred seventeen million, seven hundred sixty-five thousand, one hundred eighty".