Q: What is the digital root of 28,721,907
A: 9
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.
Split the number up and add each digit together:
If the answer is more than one digit, you would add each digit of the answer together again:
What is the digital root of number 28,721,907?
Answer: 9
| Number | 28,721,905 | 28,721,906 | 28,721,908 | 28,721,909 |
| Digital Root | 7 | 8 | 1 | 2 |