Q: What is the digital root of 3,166,821

 A: 9

Why is 9 the digital root of the number 3,166,821?

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 3,166,821?


Split the number up and add each digit together:


3 + 1 + 6 + 6 + 8 + 2 + 1 = 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 3,166,821?

Answer: 9


More Examples

Number 3,166,8193,166,8203,166,8223,166,823
Digital Root 7812

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