180117306 has 24 divisors (see below), whose sum is σ = 396081504. Its totient is φ = 59142600.

The previous prime is 180117293. The next prime is 180117313. The reversal of 180117306 is 603711081.

It is a self number, because there is not a number n which added to its sum of digits gives 180117306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73470 + ... + 75881.

It is an arithmetic number, because the mean of its divisors is an integer number (16503396).

Almost surely, 2^180117306 is an apocalyptic number.

180117306 is an abundant number, since it is smaller than the sum of its proper divisors (215964198).

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

180117306 is a wasteful number, since it uses less digits than its factorization.

180117306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149426 (or 149423 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 180117306 is about 13420.7788894684. The cubic root of 180117306 is about 564.7442453296.

Adding to 180117306 its reverse (603711081), we get a palindrome (783828387).

The spelling of 180117306 in words is "one hundred eighty million, one hundred seventeen thousand, three hundred six".