328393 has 4 divisors (see below), whose sum is σ = 353668. Its totient is φ = 303120.

The previous prime is 328381. The next prime is 328397. The reversal of 328393 is 393823.

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: 393823 = 359 ⋅1097.

It can be written as a sum of positive squares in 2 ways, for example, as 45369 + 283024 = 213^2 + 532^2 .

It is a cyclic number.

It is not a de Polignac number, because 328393 - 2⁹ = 327881 is a prime.

It is a Duffinian number.

328393 is a lucky number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (328397) 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 3 ways as a sum of consecutive naturals, for example, 12618 + ... + 12643.

It is an arithmetic number, because the mean of its divisors is an integer number (88417).

2³²⁸³⁹³ is an apocalyptic number.

It is an amenable number.

328393 is a deficient number, since it is larger than the sum of its proper divisors (25275).

328393 is a wasteful number, since it uses less digits than its factorization.

328393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25274.

The product of its digits is 3888, while the sum is 28.

The square root of 328393 is about 573.0558437011. The cubic root of 328393 is about 68.9918775008.

The spelling of 328393 in words is "three hundred twenty-eight thousand, three hundred ninety-three".