12020383530 has 64 divisors (see below), whose sum is σ = 32064232320. Its totient is φ = 3204448128.

The previous prime is 12020383523. The next prime is 12020383541. The reversal of 12020383530 is 3538302021.

12020383530 is a `hidden beast` number, since 120 + 2 + 0 + 3 + 8 + 3 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12020383494 and 12020383503.

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 31 ways as a sum of consecutive naturals, for example, 1419489 + ... + 1427931.

It is an arithmetic number, because the mean of its divisors is an integer number (501003630).

Almost surely, 2^12020383530 is an apocalyptic number.

12020383530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020383530 is an abundant number, since it is smaller than the sum of its proper divisors (20043848790).

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

12020383530 is a wasteful number, since it uses less digits than its factorization.

12020383530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13732 (or 13726 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 12020383530 its reverse (3538302021), we get a palindrome (15558685551).

The spelling of 12020383530 in words is "twelve billion, twenty million, three hundred eighty-three thousand, five hundred thirty".