204605530 has 8 divisors (see below), whose sum is σ = 368289972. Its totient is φ = 81842208.

The previous prime is 204605521. The next prime is 204605537. The reversal of 204605530 is 35506402.

It can be written as a sum of positive squares in 2 ways, for example, as 173211921 + 31393609 = 13161^2 + 5603^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 204605495 and 204605504.

It is not an unprimeable number, because it can be changed into a prime (204605537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10230267 + ... + 10230286.

Almost surely, 2^204605530 is an apocalyptic number.

204605530 is a deficient number, since it is larger than the sum of its proper divisors (163684442).

204605530 is a wasteful number, since it uses less digits than its factorization.

204605530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460560.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 204605530 is about 14304.0389401036. The cubic root of 204605530 is about 589.2584094463.

The spelling of 204605530 in words is "two hundred four million, six hundred five thousand, five hundred thirty".