204473 has 4 divisors (see below), whose sum is σ = 207348. Its totient is φ = 201600.

The previous prime is 204461. The next prime is 204481. The reversal of 204473 is 374402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110224 + 94249 = 332^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 204473 - 2¹⁰ = 203449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204443) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1328 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (51837).

2²⁰⁴⁴⁷³ is an apocalyptic number.

It is an amenable number.

204473 is a deficient number, since it is larger than the sum of its proper divisors (2875).

204473 is an equidigital number, since it uses as much as digits as its factorization.

204473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2874.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 204473 is about 452.1869082581. The cubic root of 204473 is about 58.9131154358.

Adding to 204473 its reverse (374402), we get a palindrome (578875).

The spelling of 204473 in words is "two hundred four thousand, four hundred seventy-three", and thus it is an iban number.