328809 has 8 divisors (see below), whose sum is σ = 472192. Its totient is φ = 202320.

The previous prime is 328789. The next prime is 328813. The reversal of 328809 is 908823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328809 - 2⁵ = 328777 is a prime.

It is a Duffinian number.

328809 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328809.

It is not an unprimeable number, because it can be changed into a prime (328829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4177 + ... + 4254.

It is an arithmetic number, because the mean of its divisors is an integer number (59024).

2³²⁸⁸⁰⁹ is an apocalyptic number.

328809 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

328809 is a deficient number, since it is larger than the sum of its proper divisors (143383).

328809 is a wasteful number, since it uses less digits than its factorization.

328809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 328809 is about 573.4186951958. The cubic root of 328809 is about 69.0209976003.

The spelling of 328809 in words is "three hundred twenty-eight thousand, eight hundred nine".