328785 has 16 divisors (see below), whose sum is σ = 549504. Its totient is φ = 167552.

The previous prime is 328781. The next prime is 328787. The reversal of 328785 is 587823.

It is a cyclic number.

It is not a de Polignac number, because 328785 - 2² = 328781 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 2¹⁶ + 7³ + 8 + 8⁶ + 5² .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328785.

It is not an unprimeable number, because it can be changed into a prime (328781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132 + ... + 821.

It is an arithmetic number, because the mean of its divisors is an integer number (34344).

2³²⁸⁷⁸⁵ is an apocalyptic number.

It is an amenable number.

328785 is a deficient number, since it is larger than the sum of its proper divisors (220719).

328785 is a wasteful number, since it uses less digits than its factorization.

328785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984.

The product of its digits is 13440, while the sum is 33.

The square root of 328785 is about 573.3977676971. The cubic root of 328785 is about 69.0193182624.

Adding to 328785 its product of digits (13440), we get a square (342225 = 585²).

The spelling of 328785 in words is "three hundred twenty-eight thousand, seven hundred eighty-five".