328739 has 4 divisors (see below), whose sum is σ = 343056. Its totient is φ = 314424.

The previous prime is 328721. The next prime is 328753. The reversal of 328739 is 937823.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328739 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 328739.

It is not an unprimeable number, because it can be changed into a prime (328709) 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, 7124 + ... + 7169.

It is an arithmetic number, because the mean of its divisors is an integer number (85764).

2³²⁸⁷³⁹ is an apocalyptic number.

328739 is a deficient number, since it is larger than the sum of its proper divisors (14317).

328739 is a wasteful number, since it uses less digits than its factorization.

328739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14316.

The product of its digits is 9072, while the sum is 32.

The square root of 328739 is about 573.3576545229. The cubic root of 328739 is about 69.0160993029.

The spelling of 328739 in words is "three hundred twenty-eight thousand, seven hundred thirty-nine".