Q: What is the digital root of 724,420,857

 A: 3

Why is 3 the digital root of the number 724,420,857?

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 724,420,857?


Split the number up and add each digit together:


7 + 2 + 4 + 4 + 2 + 0 + 8 + 5 + 7 = 39

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

3 + 9 = 12

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

1 + 2 = 3

What is the digital root of number 724,420,857?

Answer: 3


More Examples

Number 724,420,855724,420,856724,420,858724,420,859
Digital Root 1245

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