220320020 has 24 divisors (see below), whose sum is σ = 472518144. Its totient is φ = 86252576.

The previous prime is 220319971. The next prime is 220320043. The reversal of 220320020 is 20023022.

It is a super-2 number, since 2×220320020² = 97081822425600800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220319983 and 220320010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116252 + ... + 118131.

It is an arithmetic number, because the mean of its divisors is an integer number (19688256).

Almost surely, 2^220320020 is an apocalyptic number.

220320020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220320020 is an abundant number, since it is smaller than the sum of its proper divisors (252198124).

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

220320020 is a wasteful number, since it uses less digits than its factorization.

220320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234439 (or 234437 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 220320020 is about 14843.1809259336. The cubic root of 220320020 is about 603.9736440117.

Adding to 220320020 its reverse (20023022), we get a palindrome (240343042).

The spelling of 220320020 in words is "two hundred twenty million, three hundred twenty thousand, twenty".