Q: What is the digital root of 21,000,016

 A: 1

Why is 1 the digital root of the number 21,000,016?

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 21,000,016?


Split the number up and add each digit together:


2 + 1 + 0 + 0 + 0 + 0 + 1 + 6 = 10

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

1 + 0 = 1

What is the digital root of number 21,000,016?

Answer: 1


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Number 21,000,01421,000,01521,000,01721,000,018
Digital Root 8923

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