328189 has 4 divisors (see below), whose sum is σ = 329724. Its totient is φ = 326656.

The previous prime is 328177. The next prime is 328213. The reversal of 328189 is 981823.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 284089 + 44100 = 533^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 328189 - 2⁷ = 328061 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 328189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328109) 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, 382 + ... + 895.

It is an arithmetic number, because the mean of its divisors is an integer number (82431).

2³²⁸¹⁸⁹ is an apocalyptic number.

It is an amenable number.

328189 is a deficient number, since it is larger than the sum of its proper divisors (1535).

328189 is a wasteful number, since it uses less digits than its factorization.

328189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534.

The product of its digits is 3456, while the sum is 31.

The square root of 328189 is about 572.8778229256. The cubic root of 328189 is about 68.9775884646.

The spelling of 328189 in words is "three hundred twenty-eight thousand, one hundred eighty-nine".