204420220 has 24 divisors (see below), whose sum is σ = 431134704. Its totient is φ = 81415296.

The previous prime is 204420197. The next prime is 204420241. The reversal of 204420220 is 22024402.

It is a junction number, because it is equal to n+sod(n) for n = 204420194 and 204420203.

It is a congruent number.

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, 17274 + ... + 26593.

It is an arithmetic number, because the mean of its divisors is an integer number (17963946).

Almost surely, 2^204420220 is an apocalyptic number.

204420220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204420220 is an abundant number, since it is smaller than the sum of its proper divisors (226714484).

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

204420220 is a wasteful number, since it uses less digits than its factorization.

204420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44109 (or 44107 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 204420220 is about 14297.5599316807. The cubic root of 204420220 is about 589.0804597784.

Adding to 204420220 its reverse (22024402), we get a palindrome (226444622).

The spelling of 204420220 in words is "two hundred four million, four hundred twenty thousand, two hundred twenty".