220344020 has 24 divisors (see below), whose sum is σ = 498317064. Its totient is φ = 81357696.

The previous prime is 220344013. The next prime is 220344041. The reversal of 220344020 is 20443022.

It can be written as a sum of positive squares in 4 ways, for example, as 43507216 + 176836804 = 6596^2 + 13298^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 220344020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423479 + ... + 423998.

It is an arithmetic number, because the mean of its divisors is an integer number (20763211).

Almost surely, 2^220344020 is an apocalyptic number.

220344020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220344020 is an abundant number, since it is smaller than the sum of its proper divisors (277973044).

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

220344020 is a wasteful number, since it uses less digits than its factorization.

220344020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847499 (or 847497 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 220344020 is about 14843.9893559649. The cubic root of 220344020 is about 603.9955739921.

Adding to 220344020 its reverse (20443022), we get a palindrome (240787042).

The spelling of 220344020 in words is "two hundred twenty million, three hundred forty-four thousand, twenty".