20023033320 has 48 divisors (see below), whose sum is σ = 65074859460. Its totient is φ = 5339475456.

The previous prime is 20023033319. The next prime is 20023033333. The reversal of 20023033320 is 2333032002.

It can be written as a sum of positive squares in 2 ways, for example, as 19913160996 + 109872324 = 141114^2 + 10482^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20023033293 and 20023033302.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27809409 + ... + 27810128.

Almost surely, 2^20023033320 is an apocalyptic number.

20023033320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20023033320 is an abundant number, since it is smaller than the sum of its proper divisors (45051826140).

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

20023033320 is a wasteful number, since it uses less digits than its factorization.

20023033320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55619554 (or 55619547 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

Adding to 20023033320 its reverse (2333032002), we get a palindrome (22356065322).

The spelling of 20023033320 in words is "twenty billion, twenty-three million, thirty-three thousand, three hundred twenty".