20243305320 has 192 divisors, whose sum is σ = 72555108480. Its totient is φ = 4501937664.

The previous prime is 20243305297. The next prime is 20243305331. The reversal of 20243305320 is 2350334202.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 171037 + ... + 264083.

It is an arithmetic number, because the mean of its divisors is an integer number (377891190).

Almost surely, 2^20243305320 is an apocalyptic number.

20243305320 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 20243305320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36277554240).

20243305320 is an abundant number, since it is smaller than the sum of its proper divisors (52311803160).

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

20243305320 is a wasteful number, since it uses less digits than its factorization.

20243305320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93112 (or 93101 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

Adding to 20243305320 its reverse (2350334202), we get a palindrome (22593639522).

The spelling of 20243305320 in words is "twenty billion, two hundred forty-three million, three hundred five thousand, three hundred twenty".