Calculator for calculating a digital root
This function returns the digital root of the specified argument.
A non-negative integer must be specified as an argument.
The digital square root is the sum of adding individual digits of a number,
repeating the addition with the sum until we get a one-digit result.
To calculate, enter a non-negative integer, then click the 'Calculate' button.
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Digital root of 12846
1 + 2 + 8 + 4 + 6 = 21
2 + 1 = 3
The digital root can also be calculated using the following formula
dw= 1 + (n - 1) % 9
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