327881728 has 44 divisors (see below), whose sum is σ = 662401012. Its totient is φ = 162201600.

The previous prime is 327881707. The next prime is 327881773. The reversal of 327881728 is 827188723.

It can be written as a sum of positive squares in 2 ways, for example, as 105513984 + 222367744 = 10272^2 + 14912^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97678 + ... + 100978.

Almost surely, 2^327881728 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 327881728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331200506).

327881728 is an abundant number, since it is smaller than the sum of its proper divisors (334519284).

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

327881728 is an equidigital number, since it uses as much as digits as its factorization.

327881728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418 (or 3400 counting only the distinct ones).

The product of its digits is 301056, while the sum is 46.

The square root of 327881728 is about 18107.5047425094. The cubic root of 327881728 is about 689.5605463330.

The spelling of 327881728 in words is "three hundred twenty-seven million, eight hundred eighty-one thousand, seven hundred twenty-eight".