Q: What is the digital root of 211,207,816

 A: 1

Why is 1 the digital root of the number 211,207,816?

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 211,207,816?


Split the number up and add each digit together:


2 + 1 + 1 + 2 + 0 + 7 + 8 + 1 + 6 = 28

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

2 + 8 = 10

The answer is more than one digit again, we need to add each digit one more time:

1 + 0 = 1

What is the digital root of number 211,207,816?

Answer: 1


More Examples

Number 211,207,814211,207,815211,207,817211,207,818
Digital Root 8923

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