328815 has 12 divisors (see below), whose sum is σ = 570024. Its totient is φ = 175344.

The previous prime is 328813. The next prime is 328829. The reversal of 328815 is 518823.

It is a happy number.

It is not a de Polignac number, because 328815 - 2¹ = 328813 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3609 + ... + 3698.

It is an arithmetic number, because the mean of its divisors is an integer number (47502).

2³²⁸⁸¹⁵ is an apocalyptic number.

328815 is a deficient number, since it is larger than the sum of its proper divisors (241209).

328815 is a wasteful number, since it uses less digits than its factorization.

328815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7318 (or 7315 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 328815 is about 573.4239269511. The cubic root of 328815 is about 69.0214174220.

The spelling of 328815 in words is "three hundred twenty-eight thousand, eight hundred fifteen".