328507 has 4 divisors (see below), whose sum is σ = 339136. Its totient is φ = 317880.

The previous prime is 328481. The next prime is 328511. The reversal of 328507 is 705823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 705823 = 17 ⋅41519.

It is a cyclic number.

It is not a de Polignac number, because 328507 - 2⁷ = 328379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328007) 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, 5268 + ... + 5329.

It is an arithmetic number, because the mean of its divisors is an integer number (84784).

2³²⁸⁵⁰⁷ is an apocalyptic number.

328507 is a deficient number, since it is larger than the sum of its proper divisors (10629).

328507 is a wasteful number, since it uses less digits than its factorization.

328507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10628.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 328507 is about 573.1553018162. The cubic root of 328507 is about 68.9998599731. Note that the first 3 decimals are identical.

The spelling of 328507 in words is "three hundred twenty-eight thousand, five hundred seven".