204930454 has 4 divisors (see below), whose sum is σ = 307395684. Its totient is φ = 102465226.

The previous prime is 204930449. The next prime is 204930469. The reversal of 204930454 is 454039402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 454039402 = 2 ⋅227019701.

It is a super-2 number, since 2×204930454² = 83992981953292232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51232612 + ... + 51232615.

It is an arithmetic number, because the mean of its divisors is an integer number (76848921).

Almost surely, 2^204930454 is an apocalyptic number.

204930454 is a deficient number, since it is larger than the sum of its proper divisors (102465230).

204930454 is a wasteful number, since it uses less digits than its factorization.

204930454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102465229.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 204930454 is about 14315.3922055946. The cubic root of 204930454 is about 589.5701685943.

Adding to 204930454 its reverse (454039402), we get a palindrome (658969856).

The spelling of 204930454 in words is "two hundred four million, nine hundred thirty thousand, four hundred fifty-four".