Q: What is the digital root of 100,890,390

 A: 3

Why is 3 the digital root of the number 100,890,390?

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 100,890,390?


Split the number up and add each digit together:


1 + 0 + 0 + 8 + 9 + 0 + 3 + 9 + 0 = 30

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

3 + 0 = 3

What is the digital root of number 100,890,390?

Answer: 3


More Examples

Number 100,890,388100,890,389100,890,391100,890,392
Digital Root 1245

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