Q: What is the digital root of 8,364,721

 A: 4

Why is 4 the digital root of the number 8,364,721?

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 8,364,721?


Split the number up and add each digit together:


8 + 3 + 6 + 4 + 7 + 2 + 1 = 31

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

3 + 1 = 4

What is the digital root of number 8,364,721?

Answer: 4


More Examples

Number 8,364,7198,364,7208,364,7228,364,723
Digital Root 2356

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