Base | Representation |
---|---|
bin | 100111010000… |
… | …1111000100010 |
3 | 1102201212201010 |
4 | 1032201320202 |
5 | 20232223033 |
6 | 2013121350 |
7 | 336656355 |
oct | 116417042 |
9 | 42655633 |
10 | 20586018 |
11 | 10690642 |
12 | 6a89256 |
13 | 435a09b |
14 | 2a3c29c |
15 | 1c19863 |
hex | 13a1e22 |
20586018 has 32 divisors (see below), whose sum is σ = 42840000. Its totient is φ = 6589440.
The previous prime is 20586017. The next prime is 20586029. The reversal of 20586018 is 81068502.
It is not an unprimeable number, because it can be changed into a prime (20586017) 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 15 ways as a sum of consecutive naturals, for example, 15858 + ... + 17106.
It is an arithmetic number, because the mean of its divisors is an integer number (1338750).
Almost surely, 220586018 is an apocalyptic number.
20586018 is an abundant number, since it is smaller than the sum of its proper divisors (22253982).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20586018 is a wasteful number, since it uses less digits than its factorization.
20586018 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1362.
The product of its (nonzero) digits is 3840, while the sum is 30.
The square root of 20586018 is about 4537.1817243747. The cubic root of 20586018 is about 274.0674439265.
The spelling of 20586018 in words is "twenty million, five hundred eighty-six thousand, eighteen".
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