204243546 has 32 divisors (see below), whose sum is σ = 443963520. Its totient is φ = 62265024.

The previous prime is 204243539. The next prime is 204243547. The reversal of 204243546 is 645342402.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (204243547) 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 15 ways as a sum of consecutive naturals, for example, 3510 + ... + 20513.

It is an arithmetic number, because the mean of its divisors is an integer number (13873860).

Almost surely, 2^204243546 is an apocalyptic number.

204243546 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

204243546 is an abundant number, since it is smaller than the sum of its proper divisors (239719974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204243546 is a wasteful number, since it uses less digits than its factorization.

204243546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24150.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 204243546 is about 14291.3801292947. The cubic root of 204243546 is about 588.9107029273.

Adding to 204243546 its reverse (645342402), we get a palindrome (849585948).

The spelling of 204243546 in words is "two hundred four million, two hundred forty-three thousand, five hundred forty-six".