28 is a perfect number, by definition

today: Solar 6 = March 12. 9/6 = 3/12. 3,6,9,12...

kin 28 (Lunar Star... kinda like the comet PAN STARRS that can be sen around sunset, near the crescent moon this week...)

28 is a *perfect number* by definition.

it's not that complicated: a perfect number is a positive integer - a whole number excluding zero - for which the following is true:

the sum of its divisors is equal to the number itself, excluding the number itself (every number is a divisor of itself of course)

so why 28?
28's (proper positive) divisors are: 1, 2, 4, 7, and 14.
(we don't include 28. if we do, we say that the number is equal to half of its divisors because by including the number as a divisor of itself, the sum of its divisors wld be doubled you see)

in short (this is why math teachers should NOT drink coffee!): 28 = 1 + 2 + 4 + 7 + 14.

A number for which this is true is known as a perfect number. I'm just trying to say that 28 is cool. :)

and let the following also be known:
when the number of days in every month is 28 days...
we have the most common calendar system humanity has ever known AND EVER USED: 13 months of 28 days each plus one more day = 365. With this no-brainer kind of human societal operating system, KNOWING THE DAY OF THE MONTH, YOU AUTOMATICALLY KNOW THE DAY OF THE WEEK. go flippin figure.

and lastly -
28 is the sum of John, Paul, George and Ringo's 260-day bdays (not necessarily in that order, for George is so underrated!). So it has to be cool, dig?

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