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204611 = 1121989
BaseRepresentation
bin110001111101000011
3101101200012
4301331003
523021421
64215135
71511351
oct617503
9341605
10204611
1112a800
129a4ab
1372194
14547d1
154095b
hex31f43

204611 has 12 divisors (see below), whose sum is σ = 239400. Its totient is φ = 174240.

The previous prime is 204601. The next prime is 204613. The reversal of 204611 is 116402.

It is a de Polignac number, because none of the positive numbers 2k-204611 is a prime.

It is a super-2 number, since 2×2046112 = 83731322642, which contains 22 as substring.

204611 is a Rhonda number in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204611.

It is not an unprimeable number, because it can be changed into a prime (204613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2255 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (19950).

2204611 is an apocalyptic number.

204611 is a deficient number, since it is larger than the sum of its proper divisors (34789).

204611 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (204610) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (130).

204611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 119 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 204611 is about 452.3394742889. The cubic root of 204611 is about 58.9263660550.

Subtracting from 204611 its reverse (116402), we obtain a square (88209 = 2972).

The spelling of 204611 in words is "two hundred four thousand, six hundred eleven".

Divisors: 1 11 19 89 121 209 979 1691 2299 10769 18601 204611