204094081 has 4 divisors (see below), whose sum is σ = 204131412. Its totient is φ = 204056752.

The previous prime is 204094031. The next prime is 204094097. The reversal of 204094081 is 180490402.

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 64641600 + 139452481 = 8040^2 + 11809^2 .

It is a cyclic number.

It is not a de Polignac number, because 204094081 - 2⁹ = 204093569 is a prime.

It is a super-2 number, since 2×204094081² = 83308787798469122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204094001) 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, 8686 + ... + 21991.

It is an arithmetic number, because the mean of its divisors is an integer number (51032853).

Almost surely, 2^204094081 is an apocalyptic number.

It is an amenable number.

204094081 is a deficient number, since it is larger than the sum of its proper divisors (37331).

204094081 is an equidigital number, since it uses as much as digits as its factorization.

204094081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37330.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 204094081 is about 14286.1499712134. The cubic root of 204094081 is about 588.7670133306.

The spelling of 204094081 in words is "two hundred four million, ninety-four thousand, eighty-one".