220200020 has 24 divisors (see below), whose sum is σ = 463601544. Its totient is φ = 87854976.

The previous prime is 220200011. The next prime is 220200059. The reversal of 220200020 is 20002022.

It can be written as a sum of positive squares in 4 ways, for example, as 13645636 + 206554384 = 3694^2 + 14372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220199980 and 220200007.

It is a congruent number.

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, 5927 + ... + 21806.

It is an arithmetic number, because the mean of its divisors is an integer number (19316731).

Almost surely, 2^220200020 is an apocalyptic number.

220200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220200020 is an abundant number, since it is smaller than the sum of its proper divisors (243401524).

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

220200020 is a wasteful number, since it uses less digits than its factorization.

220200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28139 (or 28137 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 220200020 is about 14839.1381151332. The cubic root of 220200020 is about 603.8639702143.

Adding to 220200020 its reverse (20002022), we get a palindrome (240202042).

The spelling of 220200020 in words is "two hundred twenty million, two hundred thousand, twenty".