204000005 has 8 divisors (see below), whose sum is σ = 267054624. Its totient is φ = 148363600.

The previous prime is 203999989. The next prime is 204000011. The reversal of 204000005 is 500000402.

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

It is not a de Polignac number, because 204000005 - 2⁴ = 203999989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204000005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1854491 + ... + 1854600.

It is an arithmetic number, because the mean of its divisors is an integer number (33381828).

Almost surely, 2^204000005 is an apocalyptic number.

It is an amenable number.

204000005 is a deficient number, since it is larger than the sum of its proper divisors (63054619).

204000005 is a wasteful number, since it uses less digits than its factorization.

204000005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3709107.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 204000005 is about 14282.8570321207. The cubic root of 204000005 is about 588.6765364978.

Adding to 204000005 its reverse (500000402), we get a palindrome (704000407).

The spelling of 204000005 in words is "two hundred four million, five", and thus it is an aban number.