220326500 has 24 divisors (see below), whose sum is σ = 481194168. Its totient is φ = 88130400.

The previous prime is 220326481. The next prime is 220326529. The reversal of 220326500 is 5623022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5234944 + 215091556 = 2288^2 + 14666^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 219827 + ... + 220826.

It is an arithmetic number, because the mean of its divisors is an integer number (20049757).

Almost surely, 2^220326500 is an apocalyptic number.

220326500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220326500 is an abundant number, since it is smaller than the sum of its proper divisors (260867668).

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

220326500 is a wasteful number, since it uses less digits than its factorization.

220326500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440672 (or 440660 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 220326500 is about 14843.3992063813. The cubic root of 220326500 is about 603.9795652634.

Adding to 220326500 its reverse (5623022), we get a palindrome (225949522).

The spelling of 220326500 in words is "two hundred twenty million, three hundred twenty-six thousand, five hundred".