328281 has 8 divisors (see below), whose sum is σ = 444000. Its totient is φ = 215712.

The previous prime is 328277. The next prime is 328283. The reversal of 328281 is 182823.

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

It is not a de Polignac number, because 328281 - 2² = 328277 is a prime.

It is a super-2 number, since 2×328281² = 215536829922, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328281.

It is not an unprimeable number, because it can be changed into a prime (328283) 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, 531 + ... + 968.

It is an arithmetic number, because the mean of its divisors is an integer number (55500).

2³²⁸²⁸¹ is an apocalyptic number.

It is an amenable number.

328281 is a deficient number, since it is larger than the sum of its proper divisors (115719).

328281 is a wasteful number, since it uses less digits than its factorization.

328281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575.

The product of its digits is 768, while the sum is 24.

The square root of 328281 is about 572.9581136523. The cubic root of 328281 is about 68.9840332726.

The spelling of 328281 in words is "three hundred twenty-eight thousand, two hundred eighty-one".