20104404100 has 81 divisors (see below), whose sum is σ = 47990388271. Its totient is φ = 7305020800.

The previous prime is 20104404097. The next prime is 20104404149. The reversal of 20104404100 is 140440102.

The square root of 20104404100 is 141790.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 747803716 + 19356600384 = 27346^2 + 139128^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15596256 + ... + 15597544.

Almost surely, 2^20104404100 is an apocalyptic number.

20104404100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

20104404100 is the 141790-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20104404100

20104404100 is an abundant number, since it is smaller than the sum of its proper divisors (27885984171).

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

20104404100 is a wasteful number, since it uses less digits than its factorization.

20104404100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 1307 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Multiplying 20104404100 by its sum of digits (16), we get a square (321670465600 = 567160²).

Adding to 20104404100 its reverse (140440102), we get a palindrome (20244844202).

The spelling of 20104404100 in words is "twenty billion, one hundred four million, four hundred four thousand, one hundred".