360
This number would have to be a squared number as it only has 15 factors. The number I have calculated is 324 as the square root is 18
it is 400 the numbers that go in it are 1,2,4,5,8,10,20,40,50,80,100,200,400
It is: (300+400)/2 = 350
Any number between 20 and 22.36
440
700
400
NO. 400 is not prime.400 is a composite number because it is even so definitely it has other factors aside from 1 and itself which is 2.
The number 1, 5, and 25 (also known as the common factors of 25 and 400) go into 25 and 400
extensive trade with North African, Arabic, and Portuguese trading partners
The only cubic number between 400 and 600 is 8 x 8 x 8 (83) = 512.
The answer is 21. 21 X 21=441 and that's between 400 and 450