204471 has 8 divisors (see below), whose sum is σ = 302960. Its totient is φ = 136296.

The previous prime is 204461. The next prime is 204481. The reversal of 204471 is 174402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204461) and next prime (204481).

It is not a de Polignac number, because 204471 - 2⁵ = 204439 is a prime.

It is a super-3 number, since 3×204471³ = 25645809837537333, which contains 333 as substring.

It is a Duffinian number.

204471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3760 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (37870).

2²⁰⁴⁴⁷¹ is an apocalyptic number.

204471 is a deficient number, since it is larger than the sum of its proper divisors (98489).

204471 is an equidigital number, since it uses as much as digits as its factorization.

204471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7582 (or 7576 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 204471 is about 452.1846967778. The cubic root of 204471 is about 58.9129233540.

Adding to 204471 its reverse (174402), we get a palindrome (378873).

The spelling of 204471 in words is "two hundred four thousand, four hundred seventy-one", and thus it is an iban number.