20323002220 has 48 divisors (see below), whose sum is σ = 44252480160. Its totient is φ = 7830660096.

The previous prime is 20323002209. The next prime is 20323002251. The reversal of 20323002220 is 2220032302.

It is a junction number, because it is equal to n+sod(n) for n = 20323002194 and 20323002203.

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 15 ways as a sum of consecutive naturals, for example, 210679 + ... + 291601.

It is an arithmetic number, because the mean of its divisors is an integer number (921926670).

Almost surely, 2^20323002220 is an apocalyptic number.

20323002220 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 20323002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22126240080).

20323002220 is an abundant number, since it is smaller than the sum of its proper divisors (23929477940).

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

20323002220 is a wasteful number, since it uses less digits than its factorization.

20323002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81394 (or 81392 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20323002220 its reverse (2220032302), we get a palindrome (22543034522).

The spelling of 20323002220 in words is "twenty billion, three hundred twenty-three million, two thousand, two hundred twenty".