30243432020 has 72 divisors (see below), whose sum is σ = 67559675904. Its totient is φ = 11370082752.

The previous prime is 30243431971. The next prime is 30243432049. The reversal of 30243432020 is 2023434203.

It is a super-2 number, since 2×30243432020² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 900449 + ... + 933431.

It is an arithmetic number, because the mean of its divisors is an integer number (938328832).

Almost surely, 2^30243432020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30243432020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33779837952).

30243432020 is an abundant number, since it is smaller than the sum of its proper divisors (37316243884).

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

30243432020 is a wasteful number, since it uses less digits than its factorization.

30243432020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33157 (or 33136 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 30243432020 its reverse (2023434203), we get a palindrome (32266866223).

The spelling of 30243432020 in words is "thirty billion, two hundred forty-three million, four hundred thirty-two thousand, twenty".