204220433420 has 48 divisors (see below), whose sum is σ = 430758312768. Its totient is φ = 81327882240.

The previous prime is 204220433413. The next prime is 204220433437. The reversal of 204220433420 is 24334022402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 204220433420.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4502897 + ... + 4548023.

It is an arithmetic number, because the mean of its divisors is an integer number (8974131516).

Almost surely, 2^204220433420 is an apocalyptic number.

204220433420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204220433420 is an abundant number, since it is smaller than the sum of its proper divisors (226537879348).

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

204220433420 is a wasteful number, since it uses less digits than its factorization.

204220433420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46130 (or 46128 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 204220433420 its reverse (24334022402), we get a palindrome (228554455822).

The spelling of 204220433420 in words is "two hundred four billion, two hundred twenty million, four hundred thirty-three thousand, four hundred twenty".