204163530 has 32 divisors (see below), whose sum is σ = 490708800. Its totient is φ = 54364032.

The previous prime is 204163517. The next prime is 204163577. The reversal of 204163530 is 35361402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 204163530.

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 15 ways as a sum of consecutive naturals, for example, 17566 + ... + 26774.

It is an arithmetic number, because the mean of its divisors is an integer number (15334650).

Almost surely, 2^204163530 is an apocalyptic number.

204163530 is an abundant number, since it is smaller than the sum of its proper divisors (286545270).

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

204163530 is a wasteful number, since it uses less digits than its factorization.

204163530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9958.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 204163530 is about 14288.5804053447. The cubic root of 204163530 is about 588.8337875082.

The spelling of 204163530 in words is "two hundred four million, one hundred sixty-three thousand, five hundred thirty".