309324980 has 12 divisors (see below), whose sum is σ = 649582500. Its totient is φ = 123729984.

The previous prime is 309324973. The next prime is 309324989. The reversal of 309324980 is 89423903.

It can be written as a sum of positive squares in 2 ways, for example, as 242674084 + 66650896 = 15578^2 + 8164^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (309324989) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7733105 + ... + 7733144.

It is an arithmetic number, because the mean of its divisors is an integer number (54131875).

Almost surely, 2^309324980 is an apocalyptic number.

It is an amenable number.

309324980 is an abundant number, since it is smaller than the sum of its proper divisors (340257520).

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

309324980 is a wasteful number, since it uses less digits than its factorization.

309324980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15466258 (or 15466256 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 309324980 is about 17587.6371352152. The cubic root of 309324980 is about 676.2983551648.

The spelling of 309324980 in words is "three hundred nine million, three hundred twenty-four thousand, nine hundred eighty".