About the Number 450 (four hundred fifty)

450 was the smallest number without a nBAB on 31 December 2017.

MathBabbler Number Analyst (MBNA) output:
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450 is natural, counting, whole, integer
450 is even (not odd)
450 proper divisors are: 1,2,3,5,6,9,10,15,18,25,30,45,
                         50,75,90,150,225,
450 is refactorable (evenly divisable  by # of divisors)
450 has 17 proper divisors
450 is abundant (sum of divisors is 759; ratio: 1.68667)
450 is unhappy
450 is not a Squarefree Number: 9,25,225,
450 is Harshad (Niven) number
450 is composite (not prime)
450 has the prime factors: 2*3*3*5*5 (sum=18)
450 is a 5-smooth number
450 is *not* arithmetic (A003601)
450 is the sum of 2 consecutive primes
450 = 223 + 227
450 in octal is 0702
450 in hexadecimal is 0x1c2
450 in binary is 111000010 (is evil)
450 nearest square numbers: -9...34 (441...484 [22])
sqrt(450) = 21.2132
ln(450) = 6.10925
log(450) = 2.65321
450! is 1.73337e+1000
450 is 143.239 Pi years
450 is 22 score and 10 years
450 written as a Roman numeral is CDL
450 is a multiple of 5 & it contains a 5 (A121025)
450 is a multiple of 45 & it contains a 45
450 is a multiple of 50 & it contains a 50
                      _
450 reciprocal is 0.002
remainders: 
1,10,100,100

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 31 December 2017

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This work is licensed under a Creative Commons Attribution 3.0 United States License.