Q: What is the digital root of 728,007,509

 A: 2

Why is 2 the digital root of the number 728,007,509?

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 728,007,509?


Split the number up and add each digit together:


7 + 2 + 8 + 0 + 0 + 7 + 5 + 0 + 9 = 38

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

3 + 8 = 11

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

1 + 1 = 2

What is the digital root of number 728,007,509?

Answer: 2


More Examples

Number 728,007,507728,007,508728,007,510728,007,511
Digital Root 9134

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