729 = 36 = (32)3 = (33)2
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The "interest rating" is apparently computed from a weighting of several features of the number.
15(prime)+10(cube)+7(square)+4(∑digits >14)+3(even)+2(odd)+(#factors).
Obviously this odd square/cube is not prime. The sum of the digits is 18, and it has 7 factors.
Interest Rating = 10+7+4+2+7 = 30.
_____
The "interest rating" is apparently computed from a weighting of several features of the number.
15(prime)+10(cube)+7(square)+4(∑digits >14)+3(even)+2(odd)+(#factors).
Obviously this odd square/cube is not prime. The sum of the digits is 18, and it has 7 factors.
Interest Rating = 10+7+4+2+7 = 30.
