328503 has 8 divisors (see below), whose sum is σ = 500608. Its totient is φ = 187704.

The previous prime is 328481. The next prime is 328511. The reversal of 328503 is 305823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 328503 - 2⁶ = 328439 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 15643 = 328503 / (3 + 2 + 8 + 5 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 328503.

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 328503.

It is not an unprimeable number, because it can be changed into a prime (328513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7801 + ... + 7842.

It is an arithmetic number, because the mean of its divisors is an integer number (62576).

2³²⁸⁵⁰³ is an apocalyptic number.

328503 is a deficient number, since it is larger than the sum of its proper divisors (172105).

328503 is a wasteful number, since it uses less digits than its factorization.

328503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15653.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 328503 is about 573.1518123499. The cubic root of 328503 is about 68.9995799176. Note that the first 3 decimals are identical.

The spelling of 328503 in words is "three hundred twenty-eight thousand, five hundred three".