328305 has 16 divisors (see below), whose sum is σ = 538560. Its totient is φ = 170688.

The previous prime is 328303. The next prime is 328327. The reversal of 328305 is 503823.

It is not a de Polignac number, because 328305 - 2¹ = 328303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328303) 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 15 ways as a sum of consecutive naturals, for example, 391 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (33660).

2³²⁸³⁰⁵ is an apocalyptic number.

It is an amenable number.

328305 is a deficient number, since it is larger than the sum of its proper divisors (210255).

328305 is a wasteful number, since it uses less digits than its factorization.

328305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 328305 is about 572.9790572089. The cubic root of 328305 is about 68.9857143288.

The spelling of 328305 in words is "three hundred twenty-eight thousand, three hundred five".