20303501232 has 240 divisors, whose sum is σ = 64528012800. Its totient is φ = 5469811200.

The previous prime is 20303501219. The next prime is 20303501233. The reversal of 20303501232 is 23210530302.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 20303501199 and 20303501208.

It is not an unprimeable number, because it can be changed into a prime (20303501233) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 10679482 + ... + 10681382.

It is an arithmetic number, because the mean of its divisors is an integer number (268866720).

Almost surely, 2^20303501232 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 20303501232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32264006400).

20303501232 is an abundant number, since it is smaller than the sum of its proper divisors (44224511568).

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

20303501232 is a wasteful number, since it uses less digits than its factorization.

20303501232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The spelling of 20303501232 in words is "twenty billion, three hundred three million, five hundred one thousand, two hundred thirty-two".