Q: What is the digital root of 72,788,921

 A: 8

Why is 8 the digital root of the number 72,788,921?

The digital root of a number is calculated by splitting the digits of a number and then adding them together. You keep splitting and adding the digits until you reach a single positive number.

How do you calculate the digital root of 72,788,921?


Split the number up and add each digit together:


7 + 2 + 7 + 8 + 8 + 9 + 2 + 1 = 44

If the answer is more than one digit, you would add each digit of the answer together again:

4 + 4 = 8

What is the digital root of number 72,788,921?

Answer: 8


More Examples

Number 72,788,91972,788,92072,788,92272,788,923
Digital Root 6791

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