20403300020 has 24 divisors (see below), whose sum is σ = 43034044200. Its totient is φ = 8125679232.

The previous prime is 20403299999. The next prime is 20403300083. The reversal of 20403300020 is 2000330402.

It can be written as a sum of positive squares in 4 ways, for example, as 1016079376 + 19387220644 = 31876^2 + 139238^2 .

It is a super-2 number, since 2×20403300020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20403299968 and 20403300004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222855 + ... + 2232014.

It is an arithmetic number, because the mean of its divisors is an integer number (1793085175).

Almost surely, 2^20403300020 is an apocalyptic number.

20403300020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403300020 is an abundant number, since it is smaller than the sum of its proper divisors (22630744180).

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

20403300020 is a wasteful number, since it uses less digits than its factorization.

20403300020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4455107 (or 4455105 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

Adding to 20403300020 its reverse (2000330402), we get a palindrome (22403630422).

The spelling of 20403300020 in words is "twenty billion, four hundred three million, three hundred thousand, twenty".