20323020320 has 48 divisors (see below), whose sum is σ = 48033758808. Its totient is φ = 8125716480.

The previous prime is 20323020307. The next prime is 20323020329. The reversal of 20323020320 is 2302032302.

It can be written as a sum of positive squares in 4 ways, for example, as 20221977616 + 101042704 = 142204^2 + 10052^2 .

It is not an unprimeable number, because it can be changed into a prime (20323020329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363860 + ... + 415980.

Almost surely, 2^20323020320 is an apocalyptic number.

20323020320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323020320 is an abundant number, since it is smaller than the sum of its proper divisors (27710738488).

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

20323020320 is a wasteful number, since it uses less digits than its factorization.

20323020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54573 (or 54565 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

Adding to 20323020320 its reverse (2302032302), we get a palindrome (22625052622).

The spelling of 20323020320 in words is "twenty billion, three hundred twenty-three million, twenty thousand, three hundred twenty".