328723 has 4 divisors (see below), whose sum is σ = 330208. Its totient is φ = 327240.

The previous prime is 328721. The next prime is 328753. The reversal of 328723 is 327823.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 328723 - 2¹ = 328721 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 2¹⁶ + 7 + 8² + 2¹⁸ + 3⁶ .

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 328723.

It is not an unprimeable number, because it can be changed into a prime (328721) 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, 336 + ... + 877.

It is an arithmetic number, because the mean of its divisors is an integer number (82552).

2³²⁸⁷²³ is an apocalyptic number.

328723 is a deficient number, since it is larger than the sum of its proper divisors (1485).

328723 is a wasteful number, since it uses less digits than its factorization.

328723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484.

The product of its digits is 2016, while the sum is 25.

The square root of 328723 is about 573.3437014566. The cubic root of 328723 is about 69.0149795945.

Subtracting from 328723 its reverse (327823), we obtain a square (900 = 30²).

The spelling of 328723 in words is "three hundred twenty-eight thousand, seven hundred twenty-three".