290216 has 8 divisors (see below), whose sum is σ = 544170. Its totient is φ = 145104.

The previous prime is 290209. The next prime is 290219. The reversal of 290216 is 612092.

It can be written as a sum of positive squares in only one way, i.e., 206116 + 84100 = 454^2 + 290^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×290216³ = 73330612202393088, which contains 333 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (290219) by changing a digit.

290216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18131 + ... + 18146.

2²⁹⁰²¹⁶ is an apocalyptic number.

It is an amenable number.

290216 is a deficient number, since it is larger than the sum of its proper divisors (253954).

290216 is a wasteful number, since it uses less digits than its factorization.

290216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36283 (or 36279 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 290216 is about 538.7169943486. The cubic root of 290216 is about 66.2074890442.

The spelling of 290216 in words is "two hundred ninety thousand, two hundred sixteen".