200290 has 8 divisors (see below), whose sum is σ = 360540. Its totient is φ = 80112.

The previous prime is 200273. The next prime is 200293. The reversal of 200290 is 92002.

It can be written as a sum of positive squares in 2 ways, for example, as 192721 + 7569 = 439^2 + 87^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 200290.

It is not an unprimeable number, because it can be changed into a prime (200293) by changing a digit.

200290 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 in 3 ways as a sum of consecutive naturals, for example, 10005 + ... + 10024.

2²⁰⁰²⁹⁰ is an apocalyptic number.

200290 is a deficient number, since it is larger than the sum of its proper divisors (160250).

200290 is a wasteful number, since it uses less digits than its factorization.

200290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20036.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 200290 is about 447.5377079085. The cubic root of 200290 is about 58.5086066184.

Adding to 200290 its reverse (92002), we get a palindrome (292292).

The spelling of 200290 in words is "two hundred thousand, two hundred ninety".