21200530

Names of 21200530

• Cardinal: 21200530 can be written as Twenty-one million, two hundred thousand, five hundred thirty.

Scientific notation

• Scientific notation: 2.120053 × 10⁷

Factors of 21200530

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 271

Divisors of 21200530

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 5 10 13 17 26 34 53 65 85 106 130 170 181 221 265 362 442 530 689 901 905 1105 1378 1802 1810 2210 2353 3077 3445 4505 4706 6154 6890 9010 9593 11713 11765 15385 19186 23426 23530 30770 40001 47965 58565 80002 95930 117130 124709 163081 200005 249418 326162 400010 623545 815405 1247090 1630810 2120053 4240106 10600265 21200530
• Sum of all divisors σ(n): 44579808
• Sum of proper divisors (its aliquot sum) s(n): 23379278
• 21200530 is an abundant number, because the sum of its proper divisors (23379278) is greater than itself. Its abundance is 2178748

Bases of 21200530

• Binary: 1010000110111111010010010₂
• Hexadecimal: 0x1437E92
• Base-36: CMEFM

Squares and roots of 21200530

• 21200530 squared (21200530²) is 449462472280900
• 21200530 cubed (21200530³) is 9528842627465388877000
• The square root of 21200530 is 4604.4033272509
• The cube root of 21200530 is 276.7678070891

Scales and comparisons

• 21,200,530 seconds is equal to 35 weeks, 9 hours, 2 minutes, 10 seconds.
• To count from 1 to 21,200,530 would take you about four days!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 21200530 cubic inches would be around 23.1 feet tall.

Recreational maths with 21200530

• 21200530 backwards is 03500212
• 21200530 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21200530's digits is 13
• More coming soon!