204190 has 16 divisors (see below), whose sum is σ = 420192. Its totient is φ = 69984.

The previous prime is 204173. The next prime is 204233. The reversal of 204190 is 91402.

It is a super-2 number, since 2×204190² = 83387112200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

204190 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1389 + ... + 1528.

It is an arithmetic number, because the mean of its divisors is an integer number (26262).

2²⁰⁴¹⁹⁰ is an apocalyptic number.

204190 is an abundant number, since it is smaller than the sum of its proper divisors (216002).

It is a weird number, because it is abundant, but not a pseudoperfect number.

204190 is a wasteful number, since it uses less digits than its factorization.

204190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 204190 is about 451.8738762088. The cubic root of 204190 is about 58.8859234033.

Adding to 204190 its reverse (91402), we get a palindrome (295592).

The spelling of 204190 in words is "two hundred four thousand, one hundred ninety".