329128 has 8 divisors (see below), whose sum is σ = 617130. Its totient is φ = 164560.

The previous prime is 329123. The next prime is 329143. The reversal of 329128 is 821923.

It can be written as a sum of positive squares in only one way, i.e., 272484 + 56644 = 522^2 + 238^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (329123) 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 as a sum of consecutive naturals, namely, 20563 + ... + 20578.

2³²⁹¹²⁸ is an apocalyptic number.

It is an amenable number.

329128 is a deficient number, since it is larger than the sum of its proper divisors (288002).

329128 is a wasteful number, since it uses less digits than its factorization.

329128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41147 (or 41143 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 329128 is about 573.6967840245. The cubic root of 329128 is about 69.0433110424.

The spelling of 329128 in words is "three hundred twenty-nine thousand, one hundred twenty-eight".