Q: What is the digital root of 21,306,492

 A: 9

Why is 9 the digital root of the number 21,306,492?

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 21,306,492?


Split the number up and add each digit together:


2 + 1 + 3 + 0 + 6 + 4 + 9 + 2 = 27

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

2 + 7 = 9

What is the digital root of number 21,306,492?

Answer: 9


More Examples

Number 21,306,49021,306,49121,306,49321,306,494
Digital Root 7812

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