204244400420 has 24 divisors (see below), whose sum is σ = 429033099264. Its totient is φ = 81674930016.

The previous prime is 204244400419. The next prime is 204244400431. The reversal of 204244400420 is 24004442402.

It is a self number, because there is not a number n which added to its sum of digits gives 204244400420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1353434 + ... + 1496753.

It is an arithmetic number, because the mean of its divisors is an integer number (17876379136).

Almost surely, 2^204244400420 is an apocalyptic number.

204244400420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204244400420 is an abundant number, since it is smaller than the sum of its proper divisors (224788698844).

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

204244400420 is a wasteful number, since it uses less digits than its factorization.

204244400420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2853779 (or 2853777 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 204244400420 its reverse (24004442402), we get a palindrome (228248842822).

The spelling of 204244400420 in words is "two hundred four billion, two hundred forty-four million, four hundred thousand, four hundred twenty".