20304224000 has 144 divisors (see below), whose sum is σ = 50708941920. Its totient is φ = 8101068800.

The previous prime is 20304223999. The next prime is 20304224029. The reversal of 20304224000 is 42240302.

It is a self number, because there is not a number n which added to its sum of digits gives 20304224000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21855536 + ... + 21856464.

It is an arithmetic number, because the mean of its divisors is an integer number (352145430).

Almost surely, 2^20304224000 is an apocalyptic number.

20304224000 is a gapful number since it is divisible by the number (20) 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 20304224000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25354470960).

20304224000 is an abundant number, since it is smaller than the sum of its proper divisors (30404717920).

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

20304224000 is an frugal number, since it uses more digits than its factorization.

20304224000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 20304224000 its reverse (42240302), we get a palindrome (20346464302).

The spelling of 20304224000 in words is "twenty billion, three hundred four million, two hundred twenty-four thousand".