20023320224 has 24 divisors (see below), whose sum is σ = 40382399988. Its totient is φ = 9767472640.

The previous prime is 20023320223. The next prime is 20023320227. The reversal of 20023320224 is 42202332002.

It can be written as a sum of positive squares in 2 ways, for example, as 14177188624 + 5846131600 = 119068^2 + 76460^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20023320196 and 20023320205.

It is not an unprimeable number, because it can be changed into a prime (20023320223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7629527 + ... + 7632150.

Almost surely, 2^20023320224 is an apocalyptic number.

It is an amenable number.

20023320224 is an abundant number, since it is smaller than the sum of its proper divisors (20359079764).

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

20023320224 is a wasteful number, since it uses less digits than its factorization.

20023320224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15261728 (or 15261720 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20023320224 its reverse (42202332002), we get a palindrome (62225652226).

The spelling of 20023320224 in words is "twenty billion, twenty-three million, three hundred twenty thousand, two hundred twenty-four".