Digit Sum Calculator
About Digit Sum
The digit sum is the sum of all digits in a number. It's useful for various mathematical operations and checksums.
Example:
Number: 1234
Digit Sum: 1 + 2 + 3 + 4 = 10
Number: 1234
Digit Sum: 1 + 2 + 3 + 4 = 10
Properties:
- The digit sum of a number is always less than or equal to 9 times the number of digits
- Repeated digit sum (digital root) eventually becomes a single digit
- Digit sum is used in divisibility tests
- Useful in checksum calculations
Applications:
- Error detection in data transmission
- Divisibility rules
- Number theory
- Cryptography
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