Only Number Twice Sum of Digits is 18/Mistake

Source Work

1997: David Wells: Curious and Interesting Numbers (2nd ed.):

The Dictionary

$18$

Mistake

$18$ is the smallest number that is twice the sum of its digits.

While this is in fact technically a true statement, it misrepresents the fact that $18$ is the only number to equal twice the sum of its digits.

Sources

• 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $18$