Base | Representation |
---|---|
bin | 101110000110… |
… | …011001000101 |
3 | 211201222020101 |
4 | 232012121011 |
5 | 11043203210 |
6 | 1111004101 |
7 | 204501445 |
oct | 56063105 |
9 | 24658211 |
10 | 12084805 |
11 | 6904547 |
12 | 4069631 |
13 | 2671795 |
14 | 1868125 |
15 | 10daa3a |
hex | b86645 |
12084805 has 8 divisors (see below), whose sum is σ = 14538744. Its totient is φ = 9643200.
The previous prime is 12084797. The next prime is 12084811. The reversal of 12084805 is 50848021.
It can be written as a sum of positive squares in 4 ways, for example, as 16129 + 12068676 = 127^2 + 3474^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 12084805 - 23 = 12084797 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
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, 766 + ... + 4975.
It is an arithmetic number, because the mean of its divisors is an integer number (1817343).
Almost surely, 212084805 is an apocalyptic number.
It is an amenable number.
12084805 is a deficient number, since it is larger than the sum of its proper divisors (2453939).
12084805 is an equidigital number, since it uses as much as digits as its factorization.
12084805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6167.
The product of its (nonzero) digits is 2560, while the sum is 28.
The square root of 12084805 is about 3476.3206123716. The cubic root of 12084805 is about 229.4809024000.
The spelling of 12084805 in words is "twelve million, eighty-four thousand, eight hundred five".
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