220204024420 has 24 divisors (see below), whose sum is σ = 464983312248. Its totient is φ = 87594969600.

The previous prime is 220204024387. The next prime is 220204024463. The reversal of 220204024420 is 24420402022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18931558464 + 201272465956 = 137592^2 + 448634^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220204024391 and 220204024400.

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 7 ways as a sum of consecutive naturals, for example, 30411301 + ... + 30418540.

It is an arithmetic number, because the mean of its divisors is an integer number (19374304677).

Almost surely, 2^220204024420 is an apocalyptic number.

220204024420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220204024420 is an abundant number, since it is smaller than the sum of its proper divisors (244779287828).

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

220204024420 is a wasteful number, since it uses less digits than its factorization.

220204024420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60830031 (or 60830029 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 220204024420 its reverse (24420402022), we get a palindrome (244624426442).

The spelling of 220204024420 in words is "two hundred twenty billion, two hundred four million, twenty-four thousand, four hundred twenty".