204004044 has 36 divisors (see below), whose sum is σ = 518394240. Its totient is φ = 67643040.

The previous prime is 204004039. The next prime is 204004057. The reversal of 204004044 is 440400402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7959 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (14399840).

Almost surely, 2^204004044 is an apocalyptic number.

It is an amenable number.

204004044 is an abundant number, since it is smaller than the sum of its proper divisors (314390196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204004044 is a wasteful number, since it uses less digits than its factorization.

204004044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29870 (or 29865 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 204004044 is about 14282.9984247006. The cubic root of 204004044 is about 588.6804215448.

Adding to 204004044 its reverse (440400402), we get a palindrome (644404446).

The spelling of 204004044 in words is "two hundred four million, four thousand, forty-four".