Base | Representation |
---|---|
bin | 1100101011001111… |
… | …10011000100100110 |
3 | 122120021012020200020 |
4 | 12111213303010212 |
5 | 102414113032121 |
6 | 3043135100010 |
7 | 330432201435 |
oct | 62547630446 |
9 | 18507166606 |
10 | 6805205286 |
11 | 29823a7500 |
12 | 139b071606 |
13 | 845b51cb9 |
14 | 487b3111c |
15 | 29c68c1c6 |
hex | 1959f3126 |
6805205286 has 48 divisors (see below), whose sum is σ = 15018826032. Its totient is φ = 2054103040.
The previous prime is 6805205269. The next prime is 6805205299. The reversal of 6805205286 is 6825025086.
It is a congruent number.
It is an unprimeable number.
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 23 ways as a sum of consecutive naturals, for example, 168346 + ... + 204818.
It is an arithmetic number, because the mean of its divisors is an integer number (312892209).
Almost surely, 26805205286 is an apocalyptic number.
6805205286 is a gapful number since it is divisible by the number (66) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 6805205286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7509413016).
6805205286 is an abundant number, since it is smaller than the sum of its proper divisors (8213620746).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6805205286 is a wasteful number, since it uses less digits than its factorization.
6805205286 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 36757 (or 36746 counting only the distinct ones).
The product of its (nonzero) digits is 230400, while the sum is 42.
The square root of 6805205286 is about 82493.6681570168. The cubic root of 6805205286 is about 1895.0197630463.
The spelling of 6805205286 in words is "six billion, eight hundred five million, two hundred five thousand, two hundred eighty-six".
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