236

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Number

$236$ (two hundred and thirty-six) is:

$2^2 \times 59$

The $35$th nontotient:

$\nexists m \in \Z_{>0}: \map \phi m = 236$

where $\map \phi m$ denotes the Euler $\phi$ function

The $38$th happy number after $1$, $7$, $10$, $13$, $19$, $23$, $\ldots$, $130$, $133$, $139$, $167$, $176$, $188$, $190$, $192$, $193$, $203$, $208$, $219$, $226$, $230$:

$236 \to 2^2 + 3^2 + 6^2 = 4 + 9 + 36 = 49 \to 4^2 + 9^2 = 16 + 81 = 97 \to 9^2 + 7^2 = 81 + 49 = 130 \to 1^2 + 3^2 + 0^2 = 1 + 9 + 0 = 10 \to 1^2 + 0^2 = 1$

Also see

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