220323660 has 48 divisors (see below), whose sum is σ = 621637632. Its totient is φ = 58302400.

The previous prime is 220323659. The next prime is 220323667. The reversal of 220323660 is 66323022.

It is a self number, because there is not a number n which added to its sum of digits gives 220323660.

It is not an unprimeable number, because it can be changed into a prime (220323667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6156 + ... + 21875.

It is an arithmetic number, because the mean of its divisors is an integer number (12950784).

Almost surely, 2^220323660 is an apocalyptic number.

220323660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220323660 is an abundant number, since it is smaller than the sum of its proper divisors (401313972).

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

220323660 is a wasteful number, since it uses less digits than its factorization.

220323660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28174 (or 28172 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 220323660 is about 14843.3035406543. The cubic root of 220323660 is about 603.9769701612.

Adding to 220323660 its reverse (66323022), we get a palindrome (286646682).

The spelling of 220323660 in words is "two hundred twenty million, three hundred twenty-three thousand, six hundred sixty".