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205324401 = 3193354619
BaseRepresentation
bin11000011110100…
…00000001110001
3112022100120010110
430033100001301
5410030340101
632212451533
75042141262
oct1417200161
9468316113
10205324401
11a599a297
1258919ba9
13336cc939
141d3aa969
151305bcd6
hexc3d0071

205324401 has 8 divisors (see below), whose sum is σ = 275185120. Its totient is φ = 136173312.

The previous prime is 205324391. The next prime is 205324421. The reversal of 205324401 is 104423502.

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

It is not a de Polignac number, because 205324401 - 25 = 205324369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205324421) 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 7 ways as a sum of consecutive naturals, for example, 176731 + ... + 177888.

It is an arithmetic number, because the mean of its divisors is an integer number (34398140).

Almost surely, 2205324401 is an apocalyptic number.

It is an amenable number.

205324401 is a deficient number, since it is larger than the sum of its proper divisors (69860719).

205324401 is a wasteful number, since it uses less digits than its factorization.

205324401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354815.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 205324401 is about 14329.1451594294. The cubic root of 205324401 is about 589.9477124974.

Adding to 205324401 its reverse (104423502), we get a palindrome (309747903).

The spelling of 205324401 in words is "two hundred five million, three hundred twenty-four thousand, four hundred one".

Divisors: 1 3 193 579 354619 1063857 68441467 205324401