• 290 can be written using four 4's:
290 is nontrivially palindromic in base 12.
290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is an alternating number because its digits alternate between even and odd.
290 is an undulating number in base 12.
It is a plaindrome in base 11, base 14, base 15 and base 16.
It is a nialpdrome in base 8.
290 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
290 is a wasteful number, since it uses less digits than its factorization.
290 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36.
The square root of 290 is about 17.0293863659. The cubic root of 290 is about 6.6191059480.
Subtracting from 290 its product of nonzero digits (18), we obtain a palindrome (272).
The spelling of 290 in words is "two hundred ninety", and thus it is an aban number.