About the Number 530 (five hundred thirty)

530 was the smallest number without a nBAB on 01 July 2018.

MathBabbler Number Analyst (MBNA) output:
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530 is natural, counting, whole, integer
530 is even (not odd)
530 proper divisors are: 1,2,5,10,53,106,265,
530 has 7 proper divisors
530 is deficient (sum of divisors is 442; ratio: 0.833962)
530 is unhappy
530 is a Squarefree Number
530 is composite (not prime)
530 has the prime factors: 2*5*53 (sum=60)
530 is sphenic (has 3 unique prime factors)
530 is a 53-smooth number
530 is untouchable
530 is sum of two squares
...530 = 1^2 + 23^2
...530 = 13^2 + 19^2
530 is Recaman number 1201
530 is *not* arithmetic (A003601)
530 digital root is 8
530 in octal is 01022
530 in hexadecimal is 0x212
530 in binary is 1000010010 (is odious)
530 nearest square numbers: -1...46 (529...576 [24])
sqrt(530) = 23.0217
ln(530) = 6.27288
log(530) = 2.72428
530! is 2.82769e+1215
530 is 168.704 Pi years
530 is 26 score and 10 years
530 written as a Roman numeral is DXXX
530 is a multiple of 5 & it contains a 5 (A121025)
530 is a multiple of 53 & it contains a 53
                     _____________
530 reciprocal is 0.00188679245283
remainders: 
1,10,100,470,460,360,420,490,130,240,280,150,440,160,10

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 01 July 2018

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