304430020 has 12 divisors (see below), whose sum is σ = 639303084. Its totient is φ = 121772000.

The previous prime is 304430017. The next prime is 304430041. The reversal of 304430020 is 20034403.

It can be written as a sum of positive squares in 2 ways, for example, as 223861444 + 80568576 = 14962^2 + 8976^2 .

It is a junction number, because it is equal to n+sod(n) for n = 304429976 and 304430003.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7610731 + ... + 7610770.

It is an arithmetic number, because the mean of its divisors is an integer number (53275257).

Almost surely, 2^304430020 is an apocalyptic number.

It is an amenable number.

304430020 is an abundant number, since it is smaller than the sum of its proper divisors (334873064).

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

304430020 is a wasteful number, since it uses less digits than its factorization.

304430020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15221510 (or 15221508 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 304430020 is about 17447.9230855710. The cubic root of 304430020 is about 672.7119751153.

Adding to 304430020 its reverse (20034403), we get a palindrome (324464423).

The spelling of 304430020 in words is "three hundred four million, four hundred thirty thousand, twenty".