328443 has 4 divisors (see below), whose sum is σ = 437928. Its totient is φ = 218960.

The previous prime is 328439. The next prime is 328481. The reversal of 328443 is 344823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344823 = 3 ⋅114941.

It is a cyclic number.

It is not a de Polignac number, because 328443 - 2² = 328439 is a prime.

It is a D-number.

328443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (328043) 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, 54738 + ... + 54743.

It is an arithmetic number, because the mean of its divisors is an integer number (109482).

2³²⁸⁴⁴³ is an apocalyptic number.

328443 is a deficient number, since it is larger than the sum of its proper divisors (109485).

328443 is a wasteful number, since it uses less digits than its factorization.

328443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109484.

The product of its digits is 2304, while the sum is 24.

The square root of 328443 is about 573.0994678064. The cubic root of 328443 is about 68.9953788125.

The spelling of 328443 in words is "three hundred twenty-eight thousand, four hundred forty-three".