328957 has 4 divisors (see below), whose sum is σ = 332316. Its totient is φ = 325600.

The previous prime is 328931. The next prime is 328961. The reversal of 328957 is 759823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 759823 = 101 ⋅7523.

It can be written as a sum of positive squares in 2 ways, for example, as 301401 + 27556 = 549^2 + 166^2 .

It is a cyclic number.

It is not a de Polignac number, because 328957 - 2⁷ = 328829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328357) 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, 1528 + ... + 1729.

It is an arithmetic number, because the mean of its divisors is an integer number (83079).

2³²⁸⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

328957 is a deficient number, since it is larger than the sum of its proper divisors (3359).

328957 is a wasteful number, since it uses less digits than its factorization.

328957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3358.

The product of its digits is 15120, while the sum is 34.

The square root of 328957 is about 573.5477312308. The cubic root of 328957 is about 69.0313517120.

The spelling of 328957 in words is "three hundred twenty-eight thousand, nine hundred fifty-seven".