200990 has 16 divisors (see below), whose sum is σ = 367200. Its totient is φ = 79200.

The previous prime is 200989. The next prime is 201007. The reversal of 200990 is 99002.

200990 = T₅₀ + T₅₁ + ... + T₁₀₉.

200990 is a modest number, since divided by 990 gives 20 as remainder.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911 + ... + 1109.

It is an arithmetic number, because the mean of its divisors is an integer number (22950).

2²⁰⁰⁹⁹⁰ is an apocalyptic number.

200990 is a deficient number, since it is larger than the sum of its proper divisors (166210).

200990 is a wasteful number, since it uses less digits than its factorization.

200990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 200990 is about 448.3190827971. The cubic root of 200990 is about 58.5766885732.

Adding to 200990 its reverse (99002), we get a palindrome (299992).

The spelling of 200990 in words is "two hundred thousand, nine hundred ninety".