71428249728

Names of 71428249728

• Cardinal: 71428249728 can be written as Seventy-one billion, four hundred twenty-eight million, two hundred forty-nine thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 7.1428249728 × 10¹⁰

Factors of 71428249728

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 917

Divisors of 71428249728

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 8 9 11 12 16 18 22 24 31 32 33 36 44 48 62 64 66 72 88 93 96 99 124 128 132 144 176 186 192 198 248 264 279 288 341 349 352 372 384 396 496 521 528 558 576 682 698 704 744 792 992 1023 1042 1047 1056 1116 1152 1364 1396 1408 1488 1563 1584 1984 2046 2084 2094 2112 2232 2728 2792 2976 3069 3126 3141 3168 3839 3968 4092 4168 4188 4224 4464 4689 5456 5584 5731 5952 6138 6252 6282 6336 7678 8184 8336 8376 8928 9378 10819 10912 11168 11462 11517 11904 12276 12504 12564 12672 15356 16151 16368 16672 16752 17193 17856 18756 21638 21824 22336 22924 23034 24552 25008 25128 30712 32302 32457 32736 33344 33504 34386 34551 35712 37512 43276 43648 44672 45848 46068 48453 49104 50016 50256 51579 61424 64604 64914 65472 66688 67008 68772 69102 75024 86552 91696 92136 96906 97371 98208 100032 100512 103158 119009 122848 129208 129828 130944 134016 137544 138204 145359 150048 173104 177661 181829 183392 184272 193812 194742 196416 200064 201024 206316 238018 245696 258416 259656 275088 276408 290718 300096 346208 355322 357027 363658 366784 368544 387624 389484 392832 402048 412632 476036 491392 516832 519312 532983 545487 550176 552816 581436 600192 692416 710644 714054 727316 733568 737088 775248 778968 825264 952072 1033664 1038624 1065966 1071081 1090974 1100352 1105632 1162872 1384832 1421288 1428108 1454632 1474176 1550496 1557936 1598949 1636461 1650528 1904144 2000119 2067328 2077248 2131932 2142162 2181948 2200704 2211264 2325744 2842576 2856216 2909264 3100992 3115872 3197898 3272922 3301056 3808288 4000238 4154496 4263864 4284324 4363896 4422528 4651488 5636699 5685152 5712432 5818528 6000357 6201984 6231744 6395796 6545844 6602112 7616576 8000476 8527728 8568648 8727792 9302976 11273398 11370304 11424864 11637056 12000714 12463488 12791592 13091688 15233152 16000952 16910097 17055456 17137296 17455584 18001071 18605952 22546796 22740608 22849728 23274112 24001428 25583184 26183376 32001904 33820194 34110912 34274592 34911168 36002142 45093592 45699456 48002856 50730291 51166368 52366752 62003689 64003808 67640388 68221824 68549184 69822336 72004284 90187184 96005712 101460582 102332736 104733504 124007378 128007616 135280776 137098368 144008568 180374368 186011067 192011424 202921164 204665472 209467008 248014756 256015232 270561552 288017136 360748736 372022134 384022848 405842328 496029512 541123104 558033201 576034272 721497472 744044268 768045696 811684656 992059024 1082246208 1116066402 1152068544 1488088536 1623369312 1984118048 2164492416 2232132804 2304137088 2976177072 3246738624 3968236096 4464265608 5952354144 6493477248 7936472192 8928531216 11904708288 17857062432 23809416576 35714124864 71428249728
• Sum of all divisors σ(n): 232569792000
• Sum of proper divisors (its aliquot sum) s(n): 161141542272
• 71428249728 is an abundant number, because the sum of its proper divisors (161141542272) is greater than itself. Its abundance is 89713292544

Bases of 71428249728

• Binary: 1000010100001011101001001100010000000₂
• Hexadecimal: 0x10A1749880
• Base-36: WTAJA80

Squares and roots of 71428249728

• 71428249728 squared (71428249728²) is 5101994859205532073984
• 71428249728 cubed (71428249728³) is 364426562914304944659642923876352
• The square root of 71428249728 is 267260.6400650871
• The cube root of 71428249728 is 4149.1264378563

Scales and comparisons

• 71,428,249,728 seconds is equal to 2,271 years, 10 weeks, 1 day, 20 hours, 28 minutes, 48 seconds.
• To count from 1 to 71,428,249,728 would take you about four thousand, five hundred forty-two 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 71428249728 cubic inches would be around 345.8 feet tall.

Recreational maths with 71428249728

• 71428249728 backwards is 82794282417
• The number of decimal digits it has is: 11
• The sum of 71428249728's digits is 54
• More coming soon!