20302323220 has 12 divisors (see below), whose sum is σ = 42634878804. Its totient is φ = 8120929280.

The previous prime is 20302323203. The next prime is 20302323229. The reversal of 20302323220 is 2232320302.

It can be written as a sum of positive squares in 2 ways, for example, as 5454413316 + 14847909904 = 73854^2 + 121852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302323229) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 507558061 + ... + 507558100.

It is an arithmetic number, because the mean of its divisors is an integer number (3552906567).

Almost surely, 2^20302323220 is an apocalyptic number.

20302323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302323220 is an abundant number, since it is smaller than the sum of its proper divisors (22332555584).

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

20302323220 is a wasteful number, since it uses less digits than its factorization.

20302323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015116170 (or 1015116168 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 20302323220 its reverse (2232320302), we get a palindrome (22534643522).

The spelling of 20302323220 in words is "twenty billion, three hundred two million, three hundred twenty-three thousand, two hundred twenty".