21313080

Names of 21313080

• Cardinal: 21313080 can be written as Twenty-one million, three hundred thirteen thousand and eighty.

Scientific notation

• Scientific notation: 2.131308 × 10⁷

Factors of 21313080

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 894

Divisors of 21313080

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 73 90 120 146 180 219 292 360 365 438 584 657 730 811 876 1095 1314 1460 1622 1752 2190 2433 2628 2920 3244 3285 4055 4380 4866 5256 6488 6570 7299 8110 8760 9732 12165 13140 14598 16220 19464 24330 26280 29196 32440 36495 48660 58392 59203 72990 97320 118406 145980 177609 236812 291960 296015 355218 473624 532827 592030 710436 888045 1065654 1184060 1420872 1776090 2131308 2368120 2664135 3552180 4262616 5328270 7104360 10656540 21313080
• Sum of all divisors σ(n): 70302960
• Sum of proper divisors (its aliquot sum) s(n): 48989880
• 21313080 is an abundant number, because the sum of its proper divisors (48989880) is greater than itself. Its abundance is 27676800

Bases of 21313080

• Binary: 1010001010011011000111000₂
• Hexadecimal: 0x1453638
• Base-36: COTA0

Squares and roots of 21313080

• 21313080 squared (21313080²) is 454247379086400
• 21313080 cubed (21313080³) is 9681410730258770112000
• The square root of 21313080 is 4616.6091452493
• The cube root of 21313080 is 277.2567139693

Scales and comparisons

• 21,313,080 seconds is equal to 35 weeks, 1 day, 16 hours, 18 minutes.
• To count from 1 to 21,313,080 would take you about six 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 21313080 cubic inches would be around 23.1 feet tall.

Recreational maths with 21313080

• 21313080 backwards is 08031312
• 21313080 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21313080's digits is 18
• More coming soon!