330138306 has 12 divisors (see below), whose sum is σ = 715299702. Its totient is φ = 110046096.

The previous prime is 330138287. The next prime is 330138307. The reversal of 330138306 is 603831033.

It can be written as a sum of positive squares in only one way, i.e., 220077225 + 110061081 = 14835^2 + 10491^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 330138306.

It is not an unprimeable number, because it can be changed into a prime (330138307) 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 5 ways as a sum of consecutive naturals, for example, 9170491 + ... + 9170526.

Almost surely, 2^330138306 is an apocalyptic number.

330138306 is an abundant number, since it is smaller than the sum of its proper divisors (385161396).

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

330138306 is a wasteful number, since it uses less digits than its factorization.

330138306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18341025 (or 18341022 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 330138306 is about 18169.7084731704. The cubic root of 330138306 is about 691.1388502238.

Adding to 330138306 its reverse (603831033), we get a palindrome (933969339).

The spelling of 330138306 in words is "three hundred thirty million, one hundred thirty-eight thousand, three hundred six".