Base | Representation |
---|---|
bin | 11000110010111… |
… | …01011101110101 |
3 | 112111101112120111 |
4 | 30121131131311 |
5 | 411222012020 |
6 | 32350103021 |
7 | 5103656401 |
oct | 1431353565 |
9 | 474345514 |
10 | 208000885 |
11 | a7458164 |
12 | 597aaa71 |
13 | 34128c61 |
14 | 1d8a6101 |
15 | 133d9d5a |
hex | c65d775 |
208000885 has 32 divisors (see below), whose sum is σ = 270864000. Its totient is φ = 152845056.
The previous prime is 208000879. The next prime is 208000889. The reversal of 208000885 is 588000802.
It is a 8-Lehmer number, since φ(208000885) divides (208000885-1)8.
It is a cyclic number.
It is not a de Polignac number, because 208000885 - 25 = 208000853 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (208000889) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 548626 + ... + 549004.
It is an arithmetic number, because the mean of its divisors is an integer number (8464500).
Almost surely, 2208000885 is an apocalyptic number.
It is an amenable number.
208000885 is a deficient number, since it is larger than the sum of its proper divisors (62863115).
208000885 is a wasteful number, since it uses less digits than its factorization.
208000885 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 565.
The product of its (nonzero) digits is 5120, while the sum is 31.
The square root of 208000885 is about 14422.2357836779. The cubic root of 208000885 is about 592.5000540037.
The spelling of 208000885 in words is "two hundred eight million, eight hundred eighty-five", and thus it is an aban number.
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