Q: What is the digital root of 15,345,172

 A: 1

Why is 1 the digital root of the number 15,345,172?

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 15,345,172?


Split the number up and add each digit together:


1 + 5 + 3 + 4 + 5 + 1 + 7 + 2 = 28

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

2 + 8 = 10

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

1 + 0 = 1

What is the digital root of number 15,345,172?

Answer: 1


More Examples

Number 15,345,17015,345,17115,345,17315,345,174
Digital Root 8923

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