204412420 has 48 divisors (see below), whose sum is σ = 466830000. Its totient is φ = 74870784.

The previous prime is 204412409. The next prime is 204412433. The reversal of 204412420 is 24214402.

It can be written as a sum of positive squares in 8 ways, for example, as 24423364 + 179989056 = 4942^2 + 13416^2 .

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 15 ways as a sum of consecutive naturals, for example, 4456 + ... + 20704.

It is an arithmetic number, because the mean of its divisors is an integer number (9725625).

Almost surely, 2^204412420 is an apocalyptic number.

204412420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204412420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233415000).

204412420 is an abundant number, since it is smaller than the sum of its proper divisors (262417580).

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

204412420 is a wasteful number, since it uses less digits than its factorization.

204412420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16312 (or 16310 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 204412420 is about 14297.2871552613. The cubic root of 204412420 is about 589.0729672286.

Adding to 204412420 its reverse (24214402), we get a palindrome (228626822).

The spelling of 204412420 in words is "two hundred four million, four hundred twelve thousand, four hundred twenty".