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204044041 = 994920509
BaseRepresentation
bin11000010100101…
…11011100001001
3112012221111210201
430022113130021
5404213402131
632125212201
75025226405
oct1412273411
9465844721
10204044041
11a51a5343
1258401061
1333371c26
141d156105
1512da7761
hexc297709

204044041 has 4 divisors (see below), whose sum is σ = 204074500. Its totient is φ = 204013584.

The previous prime is 204044033. The next prime is 204044089. The reversal of 204044041 is 140440402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140440402 = 270220201.

It can be written as a sum of positive squares in 2 ways, for example, as 60140025 + 143904016 = 7755^2 + 11996^2 .

It is a cyclic number.

It is not a de Polignac number, because 204044041 - 23 = 204044033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204041041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306 + ... + 20203.

It is an arithmetic number, because the mean of its divisors is an integer number (51018625).

Almost surely, 2204044041 is an apocalyptic number.

It is an amenable number.

204044041 is a deficient number, since it is larger than the sum of its proper divisors (30459).

204044041 is an equidigital number, since it uses as much as digits as its factorization.

204044041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30458.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 204044041 is about 14284.3985172635. The cubic root of 204044041 is about 588.7188912270.

Adding to 204044041 its reverse (140440402), we get a palindrome (344484443).

The spelling of 204044041 in words is "two hundred four million, forty-four thousand, forty-one".

Divisors: 1 9949 20509 204044041