18212193720

Names of 18212193720

• Cardinal: 18212193720 can be written as Eighteen billion, two hundred twelve million, one hundred ninety-three thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.821219372 × 10¹⁰

Factors of 18212193720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 8116

Divisors of 18212193720

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 28 29 30 31 35 36 40 42 45 56 58 60 62 63 70 72 84 87 90 93 105 116 120 124 126 140 145 155 168 174 180 186 203 210 217 232 248 252 261 279 280 290 310 315 348 360 372 406 420 434 435 465 504 522 558 580 609 620 630 651 696 744 812 840 868 870 899 930 1015 1044 1085 1116 1160 1218 1240 1260 1302 1305 1395 1624 1736 1740 1798 1827 1860 1953 2030 2088 2170 2232 2436 2520 2604 2610 2697 2790 3045 3255 3480 3596 3654 3720 3906 4060 4340 4495 4872 5208 5220 5394 5580 6090 6293 6510 7192 7308 7812 8039 8091 8120 8680 8990 9135 9765 10440 10788 11160 12180 12586 13020 13485 14616 15624 16078 16182 17980 18270 18879 19530 21576 24117 24360 25172 26040 26970 31465 32156 32364 35960 36540 37758 39060 40195 40455 48234 50344 53940 56273 56637 62930 64312 64728 72351 73080 75516 78120 80390 80910 94395 96468 107880 112546 113274 120585 125860 144702 151032 160780 161820 168819 188790 192936 225092 226548 233131 241170 249209 251720 281365 283185 289404 321560 323640 337638 361755 377580 450184 453096 466262 482340 498418 506457 562730 566370 578808 675276 699393 723510 747627 755160 844095 932524 964680 996836 1012914 1125460 1132740 1165655 1246045 1350552 1398786 1447020 1495254 1631917 1688190 1744463 1865048 1993672 2025828 2098179 2242881 2250920 2265480 2331310 2492090 2532285 2797572 2894040 2990508 3263834 3376380 3488926 3496965 3738135 4051656 4196358 4485762 4662620 4895751 4984180 5064570 5233389 5595144 5981016 6527668 6752760 6977852 6993930 7227061 7476270 8159585 8392716 8722315 8971524 9325240 9791502 9968360 10129140 10466778 10490895 11214405 13055336 13955704 13987860 14454122 14687253 14952540 15700167 16319170 16785432 17444630 17943048 19583004 20258280 20933556 20981790 21681183 22428810 24478755 26166945 27975720 28908244 29374506 29905080 31400334 32638340 34889260 36135305 39166008 41867112 41963580 43362366 44857620 48957510 50589427 52333890 57816488 58749012 62800668 65043549 65276680 69778520 72270610 73436265 78500835 83927160 86724732 89715240 97915020 101178854 104667780 108405915 117498024 125601336 130087098 144541220 146872530 151768281 157001670 173449464 195830040 202357708 209335560 216811830 252947135 260174196 289082440 293745060 303536562 314003340 325217745 404715416 433623660 455304843 505894270 520348392 587490120 607073124 628006680 650435490 758841405 867247320 910609686 1011788540 1214146248 1300870980 1517682810 1821219372 2023577080 2276524215 2601741960 3035365620 3642438744 4553048430 6070731240 9106096860 18212193720
• Sum of all divisors σ(n): 72244224000
• Sum of proper divisors (its aliquot sum) s(n): 54032030280
• 18212193720 is an abundant number, because the sum of its proper divisors (54032030280) is greater than itself. Its abundance is 35819836560

Bases of 18212193720

• Binary: 10000111101100010000000010110111000₂
• Hexadecimal: 0x43D8805B8
• Base-36: 8D72IM0

Squares and roots of 18212193720

• 18212193720 squared (18212193720²) is 331684000094807438400
• 18212193720 cubed (18212193720³) is 6040693263551131434237766848000
• The square root of 18212193720 is 134952.5609983005
• The cube root of 18212193720 is 2630.9994283575

Scales and comparisons

• 18,212,193,720 seconds is equal to 579 years, 4 weeks, 5 days, 6 hours, 42 minutes.
• To count from 1 to 18,212,193,720 would take you about one thousand, one hundred fifty-eight 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 18212193720 cubic inches would be around 219.2 feet tall.

Recreational maths with 18212193720

• 18212193720 backwards is 02739121281
• 18212193720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18212193720's digits is 36
• More coming soon!