204005147 has 12 divisors (see below), whose sum is σ = 224495880. Its totient is φ = 184855968.

The previous prime is 204005129. The next prime is 204005159. The reversal of 204005147 is 741500402.

It is not a de Polignac number, because 204005147 - 2⁸ = 204004891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204004147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98 + ... + 20199.

It is an arithmetic number, because the mean of its divisors is an integer number (18707990).

Almost surely, 2^204005147 is an apocalyptic number.

204005147 is a deficient number, since it is larger than the sum of its proper divisors (20490733).

204005147 is a wasteful number, since it uses less digits than its factorization.

204005147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20362 (or 20339 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 204005147 is about 14283.0370369890. The cubic root of 204005147 is about 588.6814824933.

Adding to 204005147 its reverse (741500402), we get a palindrome (945505549).

The spelling of 204005147 in words is "two hundred four million, five thousand, one hundred forty-seven".