204103206 has 64 divisors (see below), whose sum is σ = 479673600. Its totient is φ = 64152000.

The previous prime is 204103201. The next prime is 204103213. The reversal of 204103206 is 602301402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204103201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339306 + ... + 339906.

It is an arithmetic number, because the mean of its divisors is an integer number (7494900).

Almost surely, 2^204103206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204103206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239836800).

204103206 is an abundant number, since it is smaller than the sum of its proper divisors (275570394).

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

204103206 is a wasteful number, since it uses less digits than its factorization.

204103206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 962 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204103206 is about 14286.4693329038. The cubic root of 204103206 is about 588.7757877463.

Adding to 204103206 its reverse (602301402), we get a palindrome (806404608).

The spelling of 204103206 in words is "two hundred four million, one hundred three thousand, two hundred six".