20404244200 has 48 divisors (see below), whose sum is σ = 47452325580. Its totient is φ = 8159554560.

The previous prime is 20404244177. The next prime is 20404244243. The reversal of 20404244200 is 244240402.

It can be written as a sum of positive squares in 6 ways, for example, as 7771832964 + 12632411236 = 88158^2 + 112394^2 .

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, 908304 + ... + 930496.

Almost surely, 2^20404244200 is an apocalyptic number.

20404244200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20404244200 is an abundant number, since it is smaller than the sum of its proper divisors (27048081380).

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

20404244200 is a wasteful number, since it uses less digits than its factorization.

20404244200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26806 (or 26797 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20404244200 its reverse (244240402), we get a palindrome (20648484602).

The spelling of 20404244200 in words is "twenty billion, four hundred four million, two hundred forty-four thousand, two hundred".