204113530 has 16 divisors (see below), whose sum is σ = 367574184. Its totient is φ = 81607680.

The previous prime is 204113491. The next prime is 204113563. The reversal of 204113530 is 35311402.

It can be written as a sum of positive squares in 4 ways, for example, as 202293729 + 1819801 = 14223^2 + 1349^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204113498 and 204113507.

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 7 ways as a sum of consecutive naturals, for example, 30574 + ... + 36646.

Almost surely, 2^204113530 is an apocalyptic number.

204113530 is a deficient number, since it is larger than the sum of its proper divisors (163460654).

204113530 is a wasteful number, since it uses less digits than its factorization.

204113530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9441.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 204113530 is about 14286.8306492378. The cubic root of 204113530 is about 588.7857147808.

Adding to 204113530 its reverse (35311402), we get a palindrome (239424932).

The spelling of 204113530 in words is "two hundred four million, one hundred thirteen thousand, five hundred thirty".