328740 has 24 divisors (see below), whose sum is σ = 920640. Its totient is φ = 87648.

The previous prime is 328721. The next prime is 328753. The reversal of 328740 is 47823.

It is a self number, because there is not a number n which added to its sum of digits gives 328740.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328740.

It is an unprimeable number.

328740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2680 + ... + 2799.

It is an arithmetic number, because the mean of its divisors is an integer number (38360).

2³²⁸⁷⁴⁰ is an apocalyptic number.

328740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328740 is an abundant number, since it is smaller than the sum of its proper divisors (591900).

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

328740 is a wasteful number, since it uses less digits than its factorization.

328740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5491 (or 5489 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 328740 is about 573.3585265783. The cubic root of 328740 is about 69.0161692835.

The spelling of 328740 in words is "three hundred twenty-eight thousand, seven hundred forty".