Q: What is the digital root of 815,885,721
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 815,885,721?
Answer: 9
Number | 815,885,719 | 815,885,720 | 815,885,722 | 815,885,723 |
Digital Root | 7 | 8 | 1 | 2 |