398139867972

Names of 398139867972

• Cardinal: 398139867972 can be written as Three hundred ninety-eight billion, one hundred thirty-nine million, eight hundred sixty-seven thousand, nine hundred seventy-two.

Scientific notation

• Scientific notation: 3.98139867972 × 10¹¹

Factors of 398139867972

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 207280

Divisors of 398139867972

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 27 28 33 36 42 44 49 54 63 66 77 81 84 98 99 108 121 126 132 147 154 162 189 196 198 231 242 252 294 297 308 324 363 378 396 441 462 484 539 567 588 594 693 726 756 847 882 891 924 1078 1089 1134 1188 1323 1386 1452 1617 1694 1764 1782 2079 2156 2178 2268 2541 2646 2772 3234 3267 3388 3564 3969 4158 4356 4851 5082 5292 5929 6237 6468 6534 7623 7938 8316 9702 9801 10164 11858 12474 13068 14553 15246 15876 17787 19404 19602 22869 23716 24948 29106 30492 35574 39204 43659 45738 53361 58212 68607 71148 87318 91476 106722 137214 160083 174636 207257 213444 274428 320166 414514 480249 621771 640332 829028 960498 1243542 1450799 1865313 1920996 2279827 2487084 2901598 3730626 4352397 4559654 5595939 5803196 6839481 7461252 8704794 9119308 10155593 11191878 13057191 13678962 15958789 16787817 17409588 20311186 20518443 22383756 25078097 26114382 27357924 30466779 31917578 33575634 39171573 40622372 41036886 47876367 50156194 52228764 60933558 61555329 63835156 67151268 75234291 78343146 82073772 91400337 95752734 100312388 111711523 117514719 121867116 123110658 143629101 150468582 156686292 175546679 182800674 184665987 191505468 223423046 225702873 235029438 246221316 274201011 287258202 300937164 335134569 351093358 365601348 369331974 430887303 446846092 451405746 470058876 526640037 548402022 574516404 670269138 677108619 702186716 738663948 822603033 861774606 902811492 1005403707 1053280074 1096804044 1228826753 1292661909 1340538276 1354217238 1579920111 1645206066 1723549212 2010807414 2031325857 2106560148 2457653506 2585323818 2708434476 3016211121 3159840222 3290412132 3686480259 4021614828 4062651714 4739760333 4915307012 5170647636 6032422242 6319680444 7372960518 8125303428 9048633363 9479520666 11059440777 12064844484 14219280999 14745921036 18097266726 18959041332 22118881554 28438561998 33178322331 36194533452 44237763108 56877123996 66356644662 99534966993 132713289324 199069933986 398139867972
• Sum of all divisors σ(n): 1330825794606
• Sum of proper divisors (its aliquot sum) s(n): 932685926634
• 398139867972 is an abundant number, because the sum of its proper divisors (932685926634) is greater than itself. Its abundance is 534546058662

Bases of 398139867972

• Binary: 101110010110010111111000100001101000100₂
• Hexadecimal: 0x5CB2FC4344
• Base-36: 52WI7490

Squares and roots of 398139867972

• 398139867972 squared (398139867972²) is 158515354468761591392784
• 398139867972 cubed (398139867972³) is 63111282299727520195467633353514048
• The square root of 398139867972 is 630983.2549061821
• The cube root of 398139867972 is 7356.6239388099

Scales and comparisons

• 398,139,867,972 seconds is equal to 12,659 years, 32 weeks, 7 hours, 46 minutes, 12 seconds.
• To count from 1 to 398,139,867,972 would take you about twenty-five thousand, three hundred nineteen 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 398139867972 cubic inches would be around 613.1 feet tall.

Recreational maths with 398139867972

• 398139867972 backwards is 279768931893
• The number of decimal digits it has is: 12
• The sum of 398139867972's digits is 72
• More coming soon!