20104173 has 8 divisors (see below), whose sum is σ = 29784000. Its totient is φ = 13402764.

The previous prime is 20104171. The next prime is 20104181. The reversal of 20104173 is 37140102.

It is not a de Polignac number, because 20104173 - 2¹ = 20104171 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372273 + ... + 372326.

It is an arithmetic number, because the mean of its divisors is an integer number (3723000).

Almost surely, 2^20104173 is an apocalyptic number.

It is an amenable number.

20104173 is a deficient number, since it is larger than the sum of its proper divisors (9679827).

20104173 is an equidigital number, since it uses as much as digits as its factorization.

20104173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744608 (or 744602 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 20104173 is about 4483.7677236895. The cubic root of 20104173 is about 271.9122274825.

Adding to 20104173 its reverse (37140102), we get a palindrome (57244275).

The spelling of 20104173 in words is "twenty million, one hundred four thousand, one hundred seventy-three".