21213681944

Names of 21213681944

• Cardinal: 21213681944 can be written as Twenty-one billion, two hundred thirteen million, six hundred eighty-one thousand, nine hundred forty-four.

Scientific notation

• Scientific notation: 2.1213681944 × 10¹⁰

Factors of 21213681944

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 301

Divisors of 21213681944

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 7 8 13 14 19 26 28 38 52 56 76 91 97 104 133 152 163 182 194 247 266 326 364 388 494 532 652 679 728 776 988 1064 1141 1261 1304 1358 1729 1843 1976 2119 2282 2522 2716 3097 3458 3686 4238 4564 5044 5432 6194 6916 7372 8476 8827 9128 9409 10088 12388 12901 13832 14744 14833 15811 16952 17654 18818 21679 23959 24776 25802 29666 31622 35308 37636 40261 43358 47918 51604 59332 63244 65863 70616 75272 80522 86716 95836 103208 110677 118664 122317 126488 131726 161044 167713 173432 178771 191672 205543 221354 244634 263452 281827 300409 322088 335426 357542 411086 442708 489268 526904 563654 600818 670852 715084 822172 856219 885416 978536 1127308 1201636 1251397 1341704 1430168 1438801 1533667 1644344 1712438 2102863 2254616 2324023 2403272 2502794 2877602 3067334 3424876 3905317 4205726 4648046 5005588 5755204 6134668 6849752 7810634 8411452 9296092 10011176 10735669 11510408 12269336 15621268 16268161 16822904 18592184 19937671 21471338 27337219 29139673 31242536 32536322 39875342 42942676 54674438 58279346 65072644 79750684 85885352 109348876 116558692 130145288 139563697 159501368 203977711 218697752 233117384 279127394 378815749 407955422 558254788 757631498 815910844 1116509576 1515262996 1631821688 2651710243 3030525992 5303420486 10606840972 21213681944
• Sum of all divisors σ(n): 52387372800
• Sum of proper divisors (its aliquot sum) s(n): 31173690856
• 21213681944 is an abundant number, because the sum of its proper divisors (31173690856) is greater than itself. Its abundance is 9960008912

Bases of 21213681944

• Binary: 10011110000011011110001100100011000₂
• Hexadecimal: 0x4F06F1918
• Base-36: 9QU2TQW

Squares and roots of 21213681944

• 21213681944 squared (21213681944²) is 450020301621191619136
• 21213681944 cubed (21213681944³) is 9546587546934906578629488080384
• The square root of 21213681944 is 145649.1741960801
• The cube root of 21213681944 is 2768.2502707737

Scales and comparisons

• 21,213,681,944 seconds is equal to 674 years, 27 weeks, 3 days, 17 hours, 25 minutes, 44 seconds.
• To count from 1 to 21,213,681,944 would take you about one thousand, three hundred forty-nine 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 21213681944 cubic inches would be around 230.7 feet tall.

Recreational maths with 21213681944

• 21213681944 backwards is 44918631212
• The number of decimal digits it has is: 11
• The sum of 21213681944's digits is 41
• More coming soon!