Q: What is the digital root of 15,515,638

 A: 7

Why is 7 the digital root of the number 15,515,638?

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 15,515,638?


Split the number up and add each digit together:


1 + 5 + 5 + 1 + 5 + 6 + 3 + 8 = 34

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

3 + 4 = 7

What is the digital root of number 15,515,638?

Answer: 7


More Examples

Number 15,515,63615,515,63715,515,63915,515,640
Digital Root 5689

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