328913 has 4 divisors (see below), whose sum is σ = 354228. Its totient is φ = 303600.

The previous prime is 328901. The next prime is 328919. The reversal of 328913 is 319823.

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 124609 + 204304 = 353^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 328913 - 2⁴ = 328897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (328919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12638 + ... + 12663.

It is an arithmetic number, because the mean of its divisors is an integer number (88557).

2³²⁸⁹¹³ is an apocalyptic number.

It is an amenable number.

328913 is a deficient number, since it is larger than the sum of its proper divisors (25315).

328913 is a wasteful number, since it uses less digits than its factorization.

328913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25314.

The product of its digits is 1296, while the sum is 26.

The square root of 328913 is about 573.5093721989. The cubic root of 328913 is about 69.0282737870.

The spelling of 328913 in words is "three hundred twenty-eight thousand, nine hundred thirteen".