30303232020 has 144 divisors (see below), whose sum is σ = 99701089488. Its totient is φ = 7419985920.

The previous prime is 30303232007. The next prime is 30303232049. The reversal of 30303232020 is 2023230303.

30303232020 is a `hidden beast` number, since 303 + 0 + 323 + 20 + 20 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 9321130116 + 20982101904 = 96546^2 + 144852^2 .

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 = 30303231984 and 30303232002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4692 + ... + 246228.

It is an arithmetic number, because the mean of its divisors is an integer number (692368677).

Almost surely, 2^30303232020 is an apocalyptic number.

30303232020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30303232020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49850544744).

30303232020 is an abundant number, since it is smaller than the sum of its proper divisors (69397857468).

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

30303232020 is a wasteful number, since it uses less digits than its factorization.

30303232020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241610 (or 241605 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

Adding to 30303232020 its reverse (2023230303), we get a palindrome (32326462323).

The spelling of 30303232020 in words is "thirty billion, three hundred three million, two hundred thirty-two thousand, twenty".