20320233020 has 24 divisors (see below), whose sum is σ = 43309395024. Its totient is φ = 8006777856.

The previous prime is 20320233007. The next prime is 20320233041. The reversal of 20320233020 is 2033202302.

It is a self number, because there is not a number n which added to its sum of digits gives 20320233020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7580837 + ... + 7583516.

It is an arithmetic number, because the mean of its divisors is an integer number (1804558126).

Almost surely, 2^20320233020 is an apocalyptic number.

20320233020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20320233020 is an abundant number, since it is smaller than the sum of its proper divisors (22989162004).

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

20320233020 is a wasteful number, since it uses less digits than its factorization.

20320233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15164429 (or 15164427 counting only the distinct ones).

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

Adding to 20320233020 its reverse (2033202302), we get a palindrome (22353435322).

The spelling of 20320233020 in words is "twenty billion, three hundred twenty million, two hundred thirty-three thousand, twenty".