20003023320 has 128 divisors (see below), whose sum is σ = 68855754240. Its totient is φ = 4553856000.

The previous prime is 20003023289. The next prime is 20003023331. The reversal of 20003023320 is 2332030002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20003023320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163404 + ... + 258276.

It is an arithmetic number, because the mean of its divisors is an integer number (537935580).

Almost surely, 2^20003023320 is an apocalyptic number.

20003023320 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 20003023320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34427877120).

20003023320 is an abundant number, since it is smaller than the sum of its proper divisors (48852730920).

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

20003023320 is a wasteful number, since it uses less digits than its factorization.

20003023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95145 (or 95141 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 20003023320 its reverse (2332030002), we get a palindrome (22335053322).

The spelling of 20003023320 in words is "twenty billion, three million, twenty-three thousand, three hundred twenty".