21312978750

Names of 21312978750

• Cardinal: 21312978750 can be written as Twenty-one billion, three hundred twelve million, nine hundred seventy-eight thousand, seven hundred fifty.

Scientific notation

• Scientific notation: 2.131297875 × 10¹⁰

Factors of 21312978750

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 81

Divisors of 21312978750

• Number of divisors d(n): 540
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 23 25 30 35 41 42 45 46 49 50 63 69 70 75 82 90 98 105 115 123 125 126 138 147 150 161 175 205 207 210 225 230 245 246 250 287 294 315 322 345 350 369 375 410 414 441 450 483 490 525 574 575 615 625 630 690 735 738 750 805 861 875 882 943 966 1025 1035 1050 1125 1127 1150 1225 1230 1250 1435 1449 1470 1575 1610 1681 1722 1725 1750 1845 1875 1886 2009 2050 2070 2205 2250 2254 2415 2450 2583 2625 2829 2870 2875 2898 3075 3150 3362 3381 3450 3675 3690 3750 4018 4025 4305 4375 4410 4715 4830 5043 5125 5166 5175 5250 5625 5635 5658 5750 6027 6125 6150 6601 6762 7175 7245 7350 7875 8050 8405 8487 8610 8625 8750 9225 9430 10045 10086 10143 10250 10350 11025 11250 11270 11767 12054 12075 12250 12915 13125 13202 14145 14350 14375 14490 15129 15375 15750 16810 16905 16974 17250 18081 18375 18450 19803 20090 20125 20286 21525 22050 23534 23575 24150 25215 25625 25830 25875 26250 28175 28290 28750 30135 30258 30625 30750 33005 33810 35301 35875 36162 36225 36750 38663 39375 39606 40250 42025 42435 43050 43125 46125 46207 47150 50225 50430 50715 51250 51750 55125 56350 58835 59409 60270 60375 61250 64575 66010 70602 70725 71750 72450 75645 76875 77326 78750 82369 84050 84525 84870 86250 90405 91875 92250 92414 99015 100450 100625 101430 105903 107625 110250 115989 117670 117875 118818 120750 126075 129150 129375 138621 140875 141450 150675 151290 153750 164738 165025 169050 176505 179375 180810 181125 183750 193315 198030 201250 210125 211806 212175 215250 230625 231035 231978 235750 247107 251125 252150 253575 258750 270641 275625 277242 281750 294175 297045 301350 301875 322875 330050 347967 353010 353625 358750 362250 378225 386630 411845 415863 420250 422625 424350 452025 461250 462070 494214 495075 502250 507150 529515 538125 541282 551250 579945 588350 589375 594090 603750 630375 645750 693105 695934 704375 707250 741321 753375 756450 811923 823690 825125 831726 845250 882525 904050 905625 966575 990150 1050625 1059030 1060875 1076250 1155175 1159890 1178750 1235535 1255625 1260750 1267875 1353205 1386210 1408750 1470875 1482642 1485225 1506750 1614375 1623846 1650250 1739835 1765050 1768125 1811250 1891125 1894487 1933150 2059225 2079315 2101250 2113125 2121750 2260125 2310350 2435769 2471070 2475375 2511250 2535750 2647575 2706410 2899725 2941750 2970450 3151875 3228750 3465525 3479670 3536250 3706605 3766875 3782250 3788974 4059615 4118450 4125625 4158630 4226250 4412625 4520250 4832875 4871538 4950750 5295150 5304375 5683461 5775875 5799450 6177675 6303750 6339375 6766025 6931050 7354375 7413210 7426125 7533750 8119230 8251250 8699175 8825250 9455625 9472435 9665750 10296125 10396575 10608750 11300625 11366922 11551750 12178845 12355350 12376875 12678750 13237875 13532050 14498625 14708750 14852250 17050383 17327625 17398350 18533025 18911250 18944870 20298075 20592250 20793150 22063125 22601250 24164375 24357690 24753750 26475750 28417305 28879375 28997250 30888375 33830125 34100766 34655250 37066050 37130625 40596150 43495875 44126250 47362175 48328750 51480625 51982875 56834610 57758750 60894225 61776750 66189375 67660250 72493125 74261250 85251915 86638125 86991750 92665125 94724350 101490375 102961250 103965750 121788450 132378750 142086525 144986250 154441875 169150625 170503830 173276250 185330250 202980750 217479375 236810875 259914375 284173050 304471125 308883750 338301250 426259575 434958750 463325625 473621750 507451875 519828750 608942250 710432625 852519150 926651250 1014903750 1184054375 1420865250 1522355625 2131297875 2368108750 3044711250 3552163125 4262595750 7104326250 10656489375 21312978750
• Sum of all divisors σ(n): 71793812376
• Sum of proper divisors (its aliquot sum) s(n): 50480833626
• 21312978750 is an abundant number, because the sum of its proper divisors (50480833626) is greater than itself. Its abundance is 29167854876

Bases of 21312978750

• Binary: 10011110110010110100011111100111110₂
• Hexadecimal: 0x4F65A3F3E
• Base-36: 9SH73NI

Squares and roots of 21312978750

• 21312978750 squared (21312978750²) is 454243063197951562500
• 21312978750 cubed (21312978750³) is 9681272753272848695091796875000
• The square root of 21312978750 is 145989.6528867713
• The cube root of 21312978750 is 2772.5627492307

Scales and comparisons

• 21,312,978,750 seconds is equal to 677 years, 35 weeks, 4 days, 23 hours, 52 minutes, 30 seconds.
• To count from 1 to 21,312,978,750 would take you about one thousand, three hundred fifty-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 21312978750 cubic inches would be around 231 feet tall.

Recreational maths with 21312978750

• 21312978750 backwards is 05787921312
• 21312978750 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21312978750's digits is 45
• More coming soon!