72128583345

Names of 72128583345

• Cardinal: 72128583345 can be written as Seventy-two billion, one hundred twenty-eight million, five hundred eighty-three thousand, three hundred forty-five.

Scientific notation

• Scientific notation: 7.2128583345 × 10¹⁰

Factors of 72128583345

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 911

Divisors of 72128583345

• Number of divisors d(n): 256
• Complete list of divisors:
  1 3 5 7 13 15 21 31 35 39 43 49 65 91 93 105 129 147 155 195 215 217 245 273 301 343 403 455 465 559 637 645 651 735 809 903 1029 1085 1209 1333 1365 1505 1519 1677 1715 1911 2015 2107 2427 2795 2821 3185 3255 3913 3999 4045 4459 4515 4557 5145 5663 6045 6321 6665 7595 8385 8463 9331 9555 10517 10535 10633 11739 12135 13377 14105 14749 16989 17329 19565 19747 19995 22295 22785 25079 27391 27993 28315 31551 31605 31899 34787 39641 42315 44247 46655 51987 52585 53165 58695 59241 65317 66885 73619 73745 75237 82173 84945 86645 98735 104361 118923 121303 125395 136955 138229 139965 157755 159495 173935 175553 191737 195951 198205 220857 221235 243509 259935 277487 296205 326027 326585 363909 368095 376185 410865 414687 452231 457219 515333 521805 526659 575211 594615 606515 691145 730527 832461 849121 877765 958685 978081 979755 1078397 1104285 1217545 1228871 1356693 1371657 1387435 1545999 1630135 1704563 1819545 2073435 2261155 2282189 2286095 2547363 2576665 2633295 2876055 3165617 3235191 3607331 3652635 3686613 4162305 4245605 4890405 5113689 5391985 5943847 6144355 6783465 6846567 6858285 7548779 7729995 8522815 8602097 9496851 10821993 11410945 11931941 12736815 14019161 15828085 15975323 16175955 17831541 18036655 18433065 22159319 22646337 25568445 25806291 29719235 34232835 35795823 37743895 42057483 43010485 47484255 47925969 52841453 54109965 59659705 66477957 70095805 79876615 89157705 98134127 110796595 111827261 113231685 129031455 155115233 158524359 178979115 210287415 239629845 264207265 294402381 332389785 335481783 369890171 465345699 490670635 559136305 686938889 775576165 792621795 1109670513 1472011905 1677408915 1849450855 2060816667 2326728495 3434694445 4808572223 5548352565 10304083335 14425716669 24042861115 72128583345
• Sum of all divisors σ(n): 153280512000
• Sum of proper divisors (its aliquot sum) s(n): 81151928655
• 72128583345 is an abundant number, because the sum of its proper divisors (81151928655) is greater than itself. Its abundance is 9023345310

Bases of 72128583345

• Binary: 1000011001011001100101101011010110001₂
• Hexadecimal: 0x10CB32D6B1
• Base-36: X4VHV3L

Squares and roots of 72128583345

• 72128583345 squared (72128583345²) is 5202532535356611389025
• 72128583345 cubed (72128583345³) is 375251301581543503870065930788625
• The square root of 72128583345 is 268567.6513376099
• The cube root of 72128583345 is 4162.6426930857

Scales and comparisons

• 72,128,583,345 seconds is equal to 2,293 years, 24 weeks, 1 day, 13 hours, 35 minutes, 45 seconds.
• To count from 1 to 72,128,583,345 would take you about four thousand, five hundred eighty-six 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 72128583345 cubic inches would be around 346.9 feet tall.

Recreational maths with 72128583345

• 72128583345 backwards is 54338582127
• The number of decimal digits it has is: 11
• The sum of 72128583345's digits is 48
• More coming soon!