204445005 has 24 divisors (see below), whose sum is σ = 335314848. Its totient is φ = 106312416.

The previous prime is 204445001. The next prime is 204445013. The reversal of 204445005 is 500544402.

It is not a de Polignac number, because 204445005 - 2² = 204445001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204445001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362854 + ... + 363416.

It is an arithmetic number, because the mean of its divisors is an integer number (13971452).

Almost surely, 2^204445005 is an apocalyptic number.

It is an amenable number.

204445005 is a deficient number, since it is larger than the sum of its proper divisors (130869843).

204445005 is an frugal number, since it uses more digits than its factorization.

204445005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 204445005 is about 14298.4266616995. The cubic root of 204445005 is about 589.1042665707.

Adding to 204445005 its reverse (500544402), we get a palindrome (704989407).

The spelling of 204445005 in words is "two hundred four million, four hundred forty-five thousand, five".