204144020 has 12 divisors (see below), whose sum is σ = 428702484. Its totient is φ = 81657600.

The previous prime is 204143993. The next prime is 204144023. The reversal of 204144020 is 20441402.

It can be written as a sum of positive squares in 2 ways, for example, as 112826884 + 91317136 = 10622^2 + 9556^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204144020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204144023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5103581 + ... + 5103620.

It is an arithmetic number, because the mean of its divisors is an integer number (35725207).

Almost surely, 2^204144020 is an apocalyptic number.

204144020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204144020 is an abundant number, since it is smaller than the sum of its proper divisors (224558464).

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

204144020 is a wasteful number, since it uses less digits than its factorization.

204144020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207210 (or 10207208 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 204144020 is about 14287.8976760054. The cubic root of 204144020 is about 588.8150304639.

Adding to 204144020 its reverse (20441402), we get a palindrome (224585422).

The spelling of 204144020 in words is "two hundred four million, one hundred forty-four thousand, twenty".