The DJIA closed above

21,000on 1 March 2017 (Future Day 2017). It took 24 days for the DJIA to increase from 20,000 to21,000.MathBabbler Number Analyst (MBNA) output: ========================================= 21000 is natural, counting, whole, integer 21000 is even (not odd) 21000 proper divisors are: 1,2,3,4,5,6,7,8,10,12,14,15,20,21,24,25,28, 30,35,40,42,50,56,60,70,75,84,100,105,120, 125,140,150,168,175,200,210,250,280,300,350, 375,420,500,525,600,700,750,840,875,1000,1050, 1400,1500,1750,2100,2625,3000,3500,4200,5250, 7000,10500, 21000 has 63 proper divisors 21000 is abundant (sum of divisors is 53880; ratio: 2.56571) 21000 is unhappy 21000 is not a Squarefree Number: 4,25,100, 21000 is Harshad (Niven) number 21000 is composite (not prime) 21000 has the prime factors: 2*2*2*3*5*5*5*7 (sum=31) 21000 is a 7-smooth number 21000 in octal is 051010 21000 in hexadecimal is 0x5208 21000 in binary is 101001000001000 (is evil) 21000 nearest square numbers: -264...25 (20736...21025 [145]) sqrt(21000) = 144.914 ln(21000) = 9.95228 log(21000) = 4.32222 21000 is an apocalyptic power (2^21000 contains 666) 21000! is inf 21000 is 6684.51 Pi years 21000 is 1050 scoreyears 21000 is 5251^2 - 5249^2 and 2 * (5251 + 5249) 21000 is a multiple of 1 & it contains a 1 (A011531) 21000 is a multiple of 2 & it contains a 2 (A121022) 21000 is a multiple of 10 & it contains a 10 (A121030) 21000 is a multiple of 21 & it contains a 21 21000 is a multiple of 100 & it contains a 100 21000 is a multiple of 210 & it contains a 210 21000 is a multiple of 1000 & it contains a 1000 21000 is a multiple of 2100 & it contains a 2100 ______ 21000 reciprocal is 0.000047619 remainders: 1,10,100,1000,10000,16000,13000,4000,19000,1000

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 02 March 2017

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