### About the Number 30 (thirty)

MathBabbler posted a nBAB for the number 31 and he noticed he didn't have a nBAB for the number 30. He did have nBABs for 10, 20, 40, 50, 60, 90, 100, 200, 500, 1500, 1600, 1700, 1800, 1900, 2000, 2100 and 8100. MathBabbler opted to create a nBAB for 80 because his mom was turning 80 in 2009, but after creating that nBAB he decided to go ahead an create this nBAB for the `30`.

```   MathBabbler Number Analyst (MBNA) output:
=========================================
30 is a natural, whole, integer
30 is even
30 proper divisors are: 1,2,3,5,6,10,15,
30 is abundant (sum of divisors is 42)
30 is unhappy
30 is not prime
30 is undulating
30 is pronic (oblong)
30 has the prime factors: 2*3*5
30 in octal is 036
30 in binary is 11110 (is evil)
30 nearest square numbers: -5...6 (25...36 [6])
sqrt(30) = 5.47723
ln(30) = 3.4012
log(30) = 1.47712
30 reciprocal is .03333333333333333333333333333333
30! is 2.65253e+32
30 is 9.5493 Pi years
30 is 1 score and 10 years
30 written as a Roman numeral is XXX
```

`[Wikipedia]` "A polygon with `30` sides is called a tricontagon.

US Hwy-`30` connects Astoria, Oregon with Atlantic City, New Jersey. US Hwy-`30` passes through MathBabbler's birthplace of Joliet, Illinois, and MathBabbler's parents live next to US Hwy-`30` in Joliet. In many parts of the U.S., US Hwy-`30` is the historic Lincoln Highway.

`30` in Roman numeral is XXX which stands for kiss, kiss, kiss in the text messaging world and porno in the adult entertainment world.

`[exercise]`   `30` equals the product of 5 and 6 and the difference between `30` and 5 and the sum of `30` and 6 are both square numbers.

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 27 February 2009