20200323220 has 144 divisors (see below), whose sum is σ = 53386429824. Its totient is φ = 6284678400.

The previous prime is 20200323193. The next prime is 20200323239. The reversal of 20200323220 is 2232300202.

It is a junction number, because it is equal to n+sod(n) for n = 20200323194 and 20200323203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18480994 + ... + 18482086.

It is an arithmetic number, because the mean of its divisors is an integer number (370739096).

Almost surely, 2^20200323220 is an apocalyptic number.

20200323220 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 20200323220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26693214912).

20200323220 is an abundant number, since it is smaller than the sum of its proper divisors (33186106604).

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

20200323220 is a wasteful number, since it uses less digits than its factorization.

20200323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222 (or 2209 counting only the distinct ones).

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

Adding to 20200323220 its reverse (2232300202), we get a palindrome (22432623422).

The spelling of 20200323220 in words is "twenty billion, two hundred million, three hundred twenty-three thousand, two hundred twenty".