Q: What is the digital root of 15,691,729

 A: 4

Why is 4 the digital root of the number 15,691,729?

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 15,691,729?


Split the number up and add each digit together:


1 + 5 + 6 + 9 + 1 + 7 + 2 + 9 = 40

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

4 + 0 = 4

What is the digital root of number 15,691,729?

Answer: 4


More Examples

Number 15,691,72715,691,72815,691,73015,691,731
Digital Root 2356

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