204205136 has 20 divisors (see below), whose sum is σ = 402355200. Its totient is φ = 100371552.

The previous prime is 204205129. The next prime is 204205171. The reversal of 204205136 is 631502402.

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, 107216 + ... + 109103.

It is an arithmetic number, because the mean of its divisors is an integer number (20117760).

Almost surely, 2^204205136 is an apocalyptic number.

It is an amenable number.

204205136 is a deficient number, since it is larger than the sum of its proper divisors (198150064).

204205136 is a wasteful number, since it uses less digits than its factorization.

204205136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216386 (or 216380 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 204205136 is about 14290.0362490793. The cubic root of 204205136 is about 588.8737838036.

Adding to 204205136 its reverse (631502402), we get a palindrome (835707538).

The spelling of 204205136 in words is "two hundred four million, two hundred five thousand, one hundred thirty-six".