43328 has 14 divisors (see below), whose sum is σ = 86106. Its totient is φ = 21632.

The previous prime is 43321. The next prime is 43331. The reversal of 43328 is 82334.

It can be written as a sum of positive squares in only one way, i.e., 43264 + 64 = 208^2 + 8^2 .

It is an Ulam number.

It is a nialpdrome in base 4, base 15 and base 16.

It is a zygodrome in base 4 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43321) by changing a digit.

43328 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 as a sum of consecutive naturals, namely, 275 + ... + 402.

2⁴³³²⁸ is an apocalyptic number.

It is an amenable number.

43328 is a deficient number, since it is larger than the sum of its proper divisors (42778).

43328 is an equidigital number, since it uses as much as digits as its factorization.

43328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 679 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 43328 is about 208.1537893001. The cubic root of 43328 is about 35.1228337126.

The spelling of 43328 in words is "forty-three thousand, three hundred twenty-eight".