204454 has 8 divisors (see below), whose sum is σ = 309168. Its totient is φ = 101400.

The previous prime is 204443. The next prime is 204461. The reversal of 204454 is 454402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37 + ... + 640.

It is an arithmetic number, because the mean of its divisors is an integer number (38646).

2²⁰⁴⁴⁵⁴ is an apocalyptic number.

204454 is a deficient number, since it is larger than the sum of its proper divisors (104714).

204454 is a wasteful number, since it uses less digits than its factorization.

204454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 204454 is about 452.1658987584. The cubic root of 204454 is about 58.9112906083.

Adding to 204454 its reverse (454402), we get a palindrome (658856).

It can be divided in two parts, 20445 and 4, that added together give a square (20449 = 143²).

The spelling of 204454 in words is "two hundred four thousand, four hundred fifty-four".