Q: What is the digital root of 21,666,839
A: 5
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 21,666,839?
Answer: 5
Number | 21,666,837 | 21,666,838 | 21,666,840 | 21,666,841 |
Digital Root | 3 | 4 | 6 | 7 |