Q: What is the digital root of 90,721,390
A: 4
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 90,721,390?
Answer: 4
| Number | 90,721,388 | 90,721,389 | 90,721,391 | 90,721,392 |
| Digital Root | 2 | 3 | 5 | 6 |