204530947 has 4 divisors (see below), whose sum is σ = 204613920. Its totient is φ = 204447976.

The previous prime is 204530941. The next prime is 204530969. The reversal of 204530947 is 749035402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204530947 - 2⁷ = 204530819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204530941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37672 + ... + 42757.

It is an arithmetic number, because the mean of its divisors is an integer number (51153480).

Almost surely, 2^204530947 is an apocalyptic number.

204530947 is a deficient number, since it is larger than the sum of its proper divisors (82973).

204530947 is an equidigital number, since it uses as much as digits as its factorization.

204530947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82972.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 204530947 is about 14301.4316416225. The cubic root of 204530947 is about 589.1868017351.

The spelling of 204530947 in words is "two hundred four million, five hundred thirty thousand, nine hundred forty-seven".