Numbers

There is only one even prime number and it is 2

The numbers are: -8 and 2/3 because -8 plus 2/3 = -22/3 and -8 times 2/3 = -16/3

$4141.00

Itself and any multiples of it

Yes, 6735 is a whole number or an integer

75, because 75 is greater than 57.

Eight hundred seventy-six billion, four hundred million.

Yes, the universal gravitational constant is believed to be the same across the whole of the universe.

No.

Let the numbers be x and y:-

If: x+y = 4 and xy = 3.4375

Then: y = 4-x and x(4-x) = 3.4375 => 4x-x^2-3.4375 = 0

Solving the above quadratic equation: x = 2.75 or x = 1.25

Therefore the numbers are: 2.75 and 1.25

Check: 2.75+1.25 = 4 and 2.75*1.25 = 3.4375

7300

It is a composite number because it has more than two factors

59 61 67 71 73 79 83 89.

If you are a mathematician then you almost certainly would have.

11, 13, 17, 19

2, 4, 6, 8, 12, 24

As a product of its prime factors: 2*2*2*2*7 = 112

Yes.

Seven hundred and three million is 703,000,000

3.041

20 is a whole number.

Yes

423.4

or

4.234 x 103

Seven million, three hundred twenty-eight thousand.

2,500,000