30320304020 has 24 divisors (see below), whose sum is σ = 63697725000. Its totient is φ = 12123343232.

The previous prime is 30320303999. The next prime is 30320304031. The reversal of 30320304020 is 2040302303.

It can be written as a sum of positive squares in 4 ways, for example, as 18965696656 + 11354607364 = 137716^2 + 106558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30320304020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246395 + ... + 348354.

It is an arithmetic number, because the mean of its divisors is an integer number (2654071875).

Almost surely, 2^30320304020 is an apocalyptic number.

It is an amenable number.

30320304020 is an abundant number, since it is smaller than the sum of its proper divisors (33377420980).

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

30320304020 is a wasteful number, since it uses less digits than its factorization.

30320304020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597307 (or 597305 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 30320304020 its reverse (2040302303), we get a palindrome (32360606323).

The spelling of 30320304020 in words is "thirty billion, three hundred twenty million, three hundred four thousand, twenty".