304303120020 has 72 divisors (see below), whose sum is σ = 933424226280. Its totient is φ = 80235724800.

The previous prime is 304303120019. The next prime is 304303120039. The reversal of 304303120020 is 20021303403.

304303120020 is a `hidden beast` number, since 3 + 0 + 430 + 31 + 200 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11782234116 + 292520885904 = 108546^2 + 540852^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 304303119975 and 304303120002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9481581 + ... + 9513620.

It is an arithmetic number, because the mean of its divisors is an integer number (12964225365).

Almost surely, 2^304303120020 is an apocalyptic number.

304303120020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304303120020 is an abundant number, since it is smaller than the sum of its proper divisors (629121106260).

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

304303120020 is a wasteful number, since it uses less digits than its factorization.

304303120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18995305 (or 18995300 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 304303120020 its reverse (20021303403), we get a palindrome (324324423423).

The spelling of 304303120020 in words is "three hundred four billion, three hundred three million, one hundred twenty thousand, twenty".