327720220 has 108 divisors (see below), whose sum is σ = 768224520. Its totient is φ = 117373440.

The previous prime is 327720149. The next prime is 327720233. The reversal of 327720220 is 22027723.

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 35 ways as a sum of consecutive naturals, for example, 5554551 + ... + 5554609.

It is an arithmetic number, because the mean of its divisors is an integer number (7113190).

Almost surely, 2^327720220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 327720220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384112260).

327720220 is an abundant number, since it is smaller than the sum of its proper divisors (440504300).

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

327720220 is a wasteful number, since it uses less digits than its factorization.

327720220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 327720220 is about 18103.0444953328. The cubic root of 327720220 is about 689.4473064802.

Adding to 327720220 its reverse (22027723), we get a palindrome (349747943).

The spelling of 327720220 in words is "three hundred twenty-seven million, seven hundred twenty thousand, two hundred twenty".