117729180 has 96 divisors (see below), whose sum is σ = 382233600. Its totient is φ = 30026304.

The previous prime is 117729179. The next prime is 117729181. The reversal of 117729180 is 81927711.

It is an interprime number because it is at equal distance from previous prime (117729179) and next prime (117729181).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117729181) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7681 + ... + 17159.

It is an arithmetic number, because the mean of its divisors is an integer number (3981600).

Almost surely, 2^117729180 is an apocalyptic number.

117729180 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 117729180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191116800).

117729180 is an abundant number, since it is smaller than the sum of its proper divisors (264504420).

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

117729180 is a wasteful number, since it uses less digits than its factorization.

117729180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520 (or 9512 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 117729180 is about 10850.3078297346. The cubic root of 117729180 is about 490.1112894519. Note that the first 3 decimals are identical.

The spelling of 117729180 in words is "one hundred seventeen million, seven hundred twenty-nine thousand, one hundred eighty".