204424165 has 16 divisors (see below), whose sum is σ = 268062336. Its totient is φ = 148420800.

The previous prime is 204424151. The next prime is 204424247. The reversal of 204424165 is 561424402.

It is a de Polignac number, because none of the positive numbers 2^k-204424165 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33544 + ... + 39166.

It is an arithmetic number, because the mean of its divisors is an integer number (16753896).

Almost surely, 2^204424165 is an apocalyptic number.

It is an amenable number.

204424165 is a deficient number, since it is larger than the sum of its proper divisors (63638171).

204424165 is a wasteful number, since it uses less digits than its factorization.

204424165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6300.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 204424165 is about 14297.6978916188. The cubic root of 204424165 is about 589.0842492069.

Adding to 204424165 its reverse (561424402), we get a palindrome (765848567).

The spelling of 204424165 in words is "two hundred four million, four hundred twenty-four thousand, one hundred sixty-five".