20918507393728

Names of 20918507393728

• Cardinal: 20918507393728 can be written as Twenty trillion, nine hundred eighteen billion, five hundred seven million, three hundred ninety-three thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.0918507393728 × 10¹³

Factors of 20918507393728

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3430

Divisors of 20918507393728

• Number of divisors d(n): 448
• Complete list of divisors:
  1 2 4 7 8 14 16 28 31 32 41 56 62 64 79 82 112 124 149 158 164 217 224 248 287 298 316 328 434 448 496 553 574 596 632 656 868 992 1043 1106 1148 1192 1264 1271 1312 1736 1984 2086 2212 2296 2384 2449 2528 2542 2624 3121 3239 3472 4172 4424 4592 4619 4768 4898 5056 5084 6109 6242 6478 6944 8344 8848 8897 9184 9238 9536 9796 10168 11771 12218 12484 12956 13888 16688 17143 17696 17794 18368 18476 19592 20336 21847 22673 23542 24436 24968 25912 32333 33376 34286 35392 35588 36952 39184 40672 42763 43694 45346 47084 48872 49936 51824 64666 66752 68572 71176 73904 78368 81344 82397 85526 87388 90692 94168 96751 97744 99872 100409 103648 127961 129332 137144 142352 147808 156736 164794 171052 174776 181384 188336 189379 193502 195488 199744 200818 207296 246559 255922 258664 274288 284704 295616 329588 342104 349552 362768 364901 376672 378758 387004 390976 401636 465029 482611 493118 511844 517328 548576 569408 659176 677257 684208 699104 702863 725536 729802 753344 757516 774008 803272 895727 930058 965222 986236 1023688 1034656 1097152 1318352 1325653 1354514 1368416 1398208 1405726 1451072 1459604 1515032 1548016 1606544 1725913 1791454 1860116 1930444 1972472 2047376 2069312 2554307 2636704 2651306 2709028 2736832 2811452 2919208 3030064 3096032 3213088 3255203 3378277 3451826 3582908 3720232 3860888 3944944 3966791 4094752 5108614 5273408 5302612 5418056 5622904 5838416 6060128 6192064 6426176 6510406 6756554 6903652 7165816 7440464 7643329 7721776 7889888 7933582 8189504 10108919 10217228 10605224 10836112 11245808 11676832 12120256 13020812 13513108 13807304 14331632 14415899 14880928 14960941 15286658 15443552 15779776 15867164 19066189 20217838 20434456 21210448 21672224 22491616 23353664 26041624 27026216 27614608 27767537 28663264 28831798 29761856 29921882 30573316 30887104 31734328 36737291 38132378 40435676 40868912 42420896 43344448 44983232 52083248 53503303 54052432 55229216 55535074 57326528 57663596 59843764 61146632 63468656 70762433 73474582 76264756 80871352 81737824 84841792 100911293 104166496 104726587 107006606 108104864 110458432 111070148 115327192 119687528 122293264 126937312 133463323 141524866 146949164 152529512 161742704 163475648 201822586 208332992 209453174 214013212 216209728 222140296 230654384 239375056 244586528 253874624 257161037 266926646 283049732 293898328 305059024 313376489 323485408 403645172 418906348 428026424 444280592 461308768 478750112 489173056 514322074 533853292 566099464 587796656 591051859 610118048 626752978 646970816 807290344 837812696 856052848 888561184 922617536 957500224 1028644148 1067706584 1132198928 1138856021 1175593312 1182103718 1220236096 1253505956 1506228931 1614580688 1675625392 1712105696 1777122368 2057288296 2135413168 2193635423 2264397856 2277712042 2351186624 2364207436 2507011912 3012457862 3229161376 3351250784 3424211392 4114576592 4137363013 4270826336 4387270846 4528795712 4555424084 4728414872 5014023824 6024915724 6458322752 6702501568 7971992147 8229153184 8274726026 8541652672 8774541692 9110848168 9456829744 10028047648 10543602517 12049831448 15943984294 16458306368 16549452052 17549083384 18221696336 18913659488 20056095296 21087205034 24099662896 31887968588 33098904104 35098166768 36443392672 37827318976 42174410068 46693096861 48199325792 63775937176 66197808208 70196333536 72886785344 84348820136 93386193722 96398651584 127551874352 132395616416 140392667072 168697640272 186772387444 255103748704 264791232832 326851678027 337395280544 373544774888 510207497408 653703356054 674790561088 747089549776 1307406712108 1494179099552 2614813424216 2988358199104 5229626848432 10459253696864 20918507393728
• Sum of all divisors σ(n): 51157241856000
• Sum of proper divisors (its aliquot sum) s(n): 30238734462272
• 20918507393728 is an abundant number, because the sum of its proper divisors (30238734462272) is greater than itself. Its abundance is 9320227068544

Bases of 20918507393728

• Binary: 100110000011001111000001100111101001011000000₂
• Hexadecimal: 0x13067833D2C0
• Base-36: 7EXTV7A9S

Squares and roots of 20918507393728

• 20918507393728 squared (20918507393728²) is 437583951581453003213737984
• 20918507393728 cubed (20918507393728³) is 9153603126533339806159928563808516964352
• The square root of 20918507393728 is 4573675.4797130065
• The cube root of 20918507393728 is 27553.5078943087

Scales and comparisons

• 20,918,507,393,728 seconds is equal to 665,143 years, 43 weeks, 1 day, 2 hours, 15 minutes, 28 seconds.
• To count from 1 to 20,918,507,393,728 would take you about one million, six hundred sixty-two thousand, eight hundred fifty-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 20918507393728 cubic inches would be around 2296.1 feet tall.

Recreational maths with 20918507393728

• 20918507393728 backwards is 82739370581902
• 20918507393728 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 20918507393728's digits is 64
• More coming soon!