Q: What is the digital root of 18,289,899

 A: 9

Why is 9 the digital root of the number 18,289,899?

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 18,289,899?


Split the number up and add each digit together:


1 + 8 + 2 + 8 + 9 + 8 + 9 + 9 = 54

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

5 + 4 = 9

What is the digital root of number 18,289,899?

Answer: 9


More Examples

Number 18,289,89718,289,89818,289,90018,289,901
Digital Root 7812

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