• 236 can be written using four 4's:
It is a happy number.
236 is nontrivially palindromic in base 9.
It is an Ulam number.
It is an alternating number because its digits alternate between even and odd.
236 is an undulating number in base 9.
It is a plaindrome in base 7, base 10, base 12 and base 14.
It is a nialpdrome in base 16.
It is an amenable number.
236 is a wasteful number, since it uses less digits than its factorization.
236 is an odious number, because the sum of its binary digits is odd.
The square root of 236 is about 15.3622914957. The cubic root of 236 is about 6.1797466059.
Subtracting from 236 its sum of digits (11), we obtain a square (225 = 152).
Adding to 236 its product of digits (36), we get a palindrome (272).
Adding to 236 its reverse (632), we get a palindrome (868).
The spelling of 236 in words is "two hundred thirty-six", and thus it is an aban number.