20104206 has 16 divisors (see below), whose sum is σ = 40435200. Its totient is φ = 6663608.

The previous prime is 20104199. The next prime is 20104207. The reversal of 20104206 is 60240102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104207) 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, 8286 + ... + 10433.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^20104206 is an apocalyptic number.

20104206 is an abundant number, since it is smaller than the sum of its proper divisors (20330994).

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

20104206 is a wasteful number, since it uses less digits than its factorization.

20104206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18903.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20104206 is about 4483.7714036289. The cubic root of 20104206 is about 271.9123762592.

Adding to 20104206 its reverse (60240102), we get a palindrome (80344308).

It can be divided in two parts, 2010 and 4206, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 20104206 in words is "twenty million, one hundred four thousand, two hundred six".