328722 has 8 divisors (see below), whose sum is σ = 657456. Its totient is φ = 109572.

The previous prime is 328721. The next prime is 328753. The reversal of 328722 is 227823.

It is a sphenic number, since it is the product of 3 distinct primes.

328722 is an admirable number.

It is a d-powerful number, because it can be written as 3 + 2¹⁰ + 7 + 8 + 2¹⁶ + 2¹⁸ .

It is a junction number, because it is equal to n+sod(n) for n = 328692 and 328701.

It is not an unprimeable number, because it can be changed into a prime (328721) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27388 + ... + 27399.

It is an arithmetic number, because the mean of its divisors is an integer number (82182).

2³²⁸⁷²² is an apocalyptic number.

328722 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

328722 is a wasteful number, since it uses less digits than its factorization.

328722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54792.

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

The square root of 328722 is about 573.3428293787. The cubic root of 328722 is about 69.0149096115.

The spelling of 328722 in words is "three hundred twenty-eight thousand, seven hundred twenty-two".