328140 has 36 divisors (see below), whose sum is σ = 995904. Its totient is φ = 87456.

The previous prime is 328129. The next prime is 328171. The reversal of 328140 is 41823.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328140.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 732 + ... + 1091.

It is an arithmetic number, because the mean of its divisors is an integer number (27664).

2³²⁸¹⁴⁰ is an apocalyptic number.

328140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328140 is an abundant number, since it is smaller than the sum of its proper divisors (667764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328140 is a wasteful number, since it uses less digits than its factorization.

328140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1833 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 328140 is about 572.8350547933. The cubic root of 328140 is about 68.9741554122.

Adding to 328140 its reverse (41823), we get a palindrome (369963).

It can be divided in two parts, 3281 and 40, that added together give a triangular number (3321 = T₈₁).

The spelling of 328140 in words is "three hundred twenty-eight thousand, one hundred forty".