Q: What is the digital root of 21,105,456

 A: 6

Why is 6 the digital root of the number 21,105,456?

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 21,105,456?


Split the number up and add each digit together:


2 + 1 + 1 + 0 + 5 + 4 + 5 + 6 = 24

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

2 + 4 = 6

What is the digital root of number 21,105,456?

Answer: 6


More Examples

Number 21,105,45421,105,45521,105,45721,105,458
Digital Root 4578

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