328385 has 4 divisors (see below), whose sum is σ = 394068. Its totient is φ = 262704.

The previous prime is 328381. The next prime is 328397. The reversal of 328385 is 583823.

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 82369 + 246016 = 287^2 + 496^2 .

It is a cyclic number.

It is not a de Polignac number, because 328385 - 2² = 328381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328385.

It is not an unprimeable number, because it can be changed into a prime (328381) 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, 32834 + ... + 32843.

It is an arithmetic number, because the mean of its divisors is an integer number (98517).

2³²⁸³⁸⁵ is an apocalyptic number.

It is an amenable number.

328385 is a deficient number, since it is larger than the sum of its proper divisors (65683).

328385 is an equidigital number, since it uses as much as digits as its factorization.

328385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65682.

The product of its digits is 5760, while the sum is 29.

The square root of 328385 is about 573.0488635361. The cubic root of 328385 is about 68.9913172579.

The spelling of 328385 in words is "three hundred twenty-eight thousand, three hundred eighty-five".