204117236 has 12 divisors (see below), whose sum is σ = 357504420. Its totient is φ = 101973120.

The previous prime is 204117223. The next prime is 204117269. The reversal of 204117236 is 632711402.

It can be written as a sum of positive squares in 2 ways, for example, as 191656336 + 12460900 = 13844^2 + 3530^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15845 + ... + 25676.

It is an arithmetic number, because the mean of its divisors is an integer number (29792035).

Almost surely, 2^204117236 is an apocalyptic number.

It is an amenable number.

204117236 is a deficient number, since it is larger than the sum of its proper divisors (153387184).

204117236 is a wasteful number, since it uses less digits than its factorization.

204117236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42754 (or 42752 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 204117236 is about 14286.9603485136. The cubic root of 204117236 is about 588.7892782008.

Adding to 204117236 its reverse (632711402), we get a palindrome (836828638).

The spelling of 204117236 in words is "two hundred four million, one hundred seventeen thousand, two hundred thirty-six".