20047022900 has 18 divisors (see below), whose sum is σ = 43502039910. Its totient is φ = 8018809120.

The previous prime is 20047022887. The next prime is 20047022909. The reversal of 20047022900 is 922074002.

It can be written as a sum of positive squares in 3 ways, for example, as 110712484 + 19936310416 = 10522^2 + 141196^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20047022900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20047022909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100235015 + ... + 100235214.

It is an arithmetic number, because the mean of its divisors is an integer number (2416779995).

Almost surely, 2^20047022900 is an apocalyptic number.

20047022900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20047022900 is an abundant number, since it is smaller than the sum of its proper divisors (23455017010).

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

20047022900 is a wasteful number, since it uses less digits than its factorization.

20047022900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200470243 (or 200470236 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20047022900 its reverse (922074002), we get a palindrome (20969096902).

The spelling of 20047022900 in words is "twenty billion, forty-seven million, twenty-two thousand, nine hundred".