180642306 has 64 divisors (see below), whose sum is σ = 419126400. Its totient is φ = 51403776.

The previous prime is 180642283. The next prime is 180642311. The reversal of 180642306 is 603246081.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77080 + ... + 79388.

It is an arithmetic number, because the mean of its divisors is an integer number (6548850).

Almost surely, 2^180642306 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 180642306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209563200).

180642306 is an abundant number, since it is smaller than the sum of its proper divisors (238484094).

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

180642306 is a wasteful number, since it uses less digits than its factorization.

180642306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 180642306 is about 13440.3238800261. The cubic root of 180642306 is about 565.2924123988.

Adding to 180642306 its reverse (603246081), we get a palindrome (783888387).

The spelling of 180642306 in words is "one hundred eighty million, six hundred forty-two thousand, three hundred six".