Sum of Digits of 721
ANSWER : 10
The sum of the digits in the number 721 is: 7 + 2 + 1 = 10
How to Calculate the Digit Sum of 721?
To find the sum of digits of a number, simply break it into individual digits and add them. For 721:
7 + 2 + 1 = 10
The digits of 721 are: 7, 2, 1.
Their sum is: 10
Step-by-Step Digit Sum of 721
We split the number 721 into its individual digits: 7 + 2 + 1 = 10
Digit Positions in 721
| Position | Digit |
|---|---|
| 1 | 7 |
| 2 | 2 |
| 3 | 1 |
Length of 721
The number 721 has 3 digits.
Is 10 a Prime Number?
No, 10 is not a prime number.
Digit Sums in Other Bases
- Binary: 1011010001 → 5
- Octal: 1321 → 7
- Hexadecimal: 2D1 → 16