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 a Harshad number
   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 hexadecimal is 0x1e
   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

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