328885 has 4 divisors (see below), whose sum is σ = 394668. Its totient is φ = 263104.

The previous prime is 328883. The next prime is 328891. The reversal of 328885 is 588823.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 588823 = 23 ⋅25601.

It can be written as a sum of positive squares in 2 ways, for example, as 167281 + 161604 = 409^2 + 402^2 .

It is a cyclic number.

It is not a de Polignac number, because 328885 - 2¹ = 328883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32884 + ... + 32893.

It is an arithmetic number, because the mean of its divisors is an integer number (98667).

2³²⁸⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

328885 is a deficient number, since it is larger than the sum of its proper divisors (65783).

328885 is an equidigital number, since it uses as much as digits as its factorization.

328885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65782.

The product of its digits is 15360, while the sum is 34.

The square root of 328885 is about 573.4849605700. The cubic root of 328885 is about 69.0263149646.

The spelling of 328885 in words is "three hundred twenty-eight thousand, eight hundred eighty-five".