204004836 has 108 divisors (see below), whose sum is σ = 605945340. Its totient is φ = 57697920.

The previous prime is 204004817. The next prime is 204004837. The reversal of 204004836 is 638400402.

204004836 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 138297600 + 65707236 = 11760^2 + 8106^2 .

It is a super-3 number, since 3×204004836³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (204004837) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 191746 + ... + 192806.

It is an arithmetic number, because the mean of its divisors is an integer number (5610605).

Almost surely, 2^204004836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204004836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302972670).

204004836 is an abundant number, since it is smaller than the sum of its proper divisors (401940504).

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

204004836 is a wasteful number, since it uses less digits than its factorization.

204004836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 204004836 is about 14283.0261499446. The cubic root of 204004836 is about 588.6811833504.

The spelling of 204004836 in words is "two hundred four million, four thousand, eight hundred thirty-six".