21004120215

Names of 21004120215

• Cardinal: 21004120215 can be written as Twenty-one billion, four million, one hundred twenty thousand, two hundred fifteen.

Scientific notation

• Scientific notation: 2.1004120215 × 10¹⁰

Factors of 21004120215

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 146

Divisors of 21004120215

• Number of divisors d(n): 216
• Complete list of divisors:
  1 3 5 9 13 15 31 39 41 45 53 65 93 117 123 155 159 169 195 205 265 279 369 403 465 477 507 533 585 615 689 795 845 1209 1271 1395 1521 1599 1643 1681 1845 2015 2067 2173 2385 2535 2665 3445 3627 3813 4797 4929 5043 5239 6045 6201 6355 6519 6929 7605 7995 8215 8405 8957 10335 10865 11439 14787 15129 15717 16523 18135 19065 19557 20787 21359 21853 23985 24645 25215 26195 26871 28249 31005 32595 34645 44785 47151 49569 52111 57195 62361 64077 65559 67363 73935 75645 78585 80613 82615 84747 89093 97785 103935 106795 109265 134355 141245 148707 156333 192231 196677 202089 214799 235755 247845 254241 260555 267279 277667 284089 311805 320385 327795 336815 367237 403065 423735 445465 468999 606267 644397 677443 743535 781665 801837 833001 852267 875719 961155 983385 1010445 1073995 1101711 1158209 1271205 1336395 1388335 1420445 1836185 1933191 2032329 2344995 2499003 2556801 2627157 2761883 3031335 3221985 3305133 3387215 3474627 4009185 4165005 4261335 4378595 5508555 5791045 6096987 7881471 8285649 8806759 9665955 10161645 10423881 11384347 12495015 12784005 13135785 13809415 15056717 16525665 17373135 24856947 26420277 30484935 34153041 35904479 39407355 41428245 44033795 45170151 52119405 56921735 75283585 79260831 102459123 107713437 124284735 132101385 135510453 170765205 179522395 225850755 323140311 396304155 466758227 512295615 538567185 677552265 1400274681 1615701555 2333791135 4200824043 7001373405 21004120215
• Sum of all divisors σ(n): 42498608256
• Sum of proper divisors (its aliquot sum) s(n): 21494488041
• 21004120215 is an abundant number, because the sum of its proper divisors (21494488041) is greater than itself. Its abundance is 490367826

Bases of 21004120215

• Binary: 10011100011111100010111000010010111₂
• Hexadecimal: 0x4E3F17097
• Base-36: 9NDB6VR

Squares and roots of 21004120215

• 21004120215 squared (21004120215²) is 441173066006171646225
• 21004120215 cubed (21004120215³) is 9266452114013759189234350938375
• The square root of 21004120215 is 144927.9828570037
• The cube root of 21004120215 is 2759.1045988799

Scales and comparisons

• 21,004,120,215 seconds is equal to 667 years, 45 weeks, 5 hours, 50 minutes, 15 seconds.
• To count from 1 to 21,004,120,215 would take you about one thousand, three hundred thirty-five years!

  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 21004120215 cubic inches would be around 229.9 feet tall.

Recreational maths with 21004120215

• 21004120215 backwards is 51202140012
• The number of decimal digits it has is: 11
• The sum of 21004120215's digits is 18
• More coming soon!