81749109330

Names of 81749109330

• Cardinal: 81749109330 can be written as Eighty-one billion, seven hundred forty-nine million, one hundred nine thousand, three hundred thirty.

Scientific notation

• Scientific notation: 8.174910933 × 10¹⁰

Factors of 81749109330

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 439

Divisors of 81749109330

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 49 54 63 70 90 98 105 126 135 147 151 189 210 245 270 271 294 302 315 378 441 453 490 542 630 735 755 813 882 906 945 1057 1323 1355 1359 1470 1510 1626 1890 1897 2114 2205 2265 2439 2646 2710 2718 3171 3794 4065 4077 4410 4530 4878 5285 5691 6342 6615 6795 7317 7399 8130 8154 9485 9513 10570 11382 12195 13230 13279 13590 14634 14798 15855 17073 18970 19026 20385 22197 22801 24390 26558 28455 28539 31710 34146 36585 36995 39837 40770 40921 44394 45602 47565 51219 56910 57078 66395 66591 68403 73170 73990 79674 81842 85365 95130 102438 110985 114005 119511 122763 132790 133182 136806 142695 159607 170730 199185 199773 204605 205209 221970 228010 239022 245526 256095 285390 286447 319214 332955 342015 358533 368289 398370 399546 409210 410418 478821 512190 572894 597555 613815 615627 665910 684030 717066 736578 798035 859341 957642 998865 1026045 1104867 1117249 1195110 1227630 1231254 1432235 1436463 1596070 1718682 1792665 1841445 1997730 2005129 2052090 2209734 2234498 2394105 2578023 2864470 2872926 3078135 3351747 3585330 3682890 4010258 4296705 4309389 4788210 5156046 5524335 5586245 6015387 6156270 6179071 6703494 7182315 7734069 8593410 8618778 10025645 10055241 11048670 11172490 12030774 12358142 12890115 14364630 15468138 16758735 18046161 18537213 20051290 20110482 21546945 25780230 30076935 30165723 30895355 33517470 36092322 37074426 38670345 43093890 43253497 50276205 54138483 55611639 60153870 60331446 61790710 77340690 86506994 90230805 92686065 100552410 108276966 111223278 129760491 150828615 166834917 180461610 185372130 216267485 259520982 270692415 278058195 301657230 302774479 333669834 389281473 432534970 541384830 556116390 605548958 648802455 778562946 834174585 908323437 1167844419 1297604910 1513872395 1668349170 1816646874 1946407365 2335688838 2724970311 3027744790 3892814730 4541617185 5449940622 5839222095 8174910933 9083234370 11678444190 13624851555 16349821866 27249703110 40874554665 81749109330
• Sum of all divisors σ(n): 256221584640
• Sum of proper divisors (its aliquot sum) s(n): 174472475310
• 81749109330 is an abundant number, because the sum of its proper divisors (174472475310) is greater than itself. Its abundance is 92723365980

Bases of 81749109330

• Binary: 1001100001000101000000110101001010010₂
• Hexadecimal: 0x1308A06A52
• Base-36: 11JZB4GI

Squares and roots of 81749109330

• 81749109330 squared (81749109330²) is 6682916876248293048900
• 81749109330 cubed (81749109330³) is 546322502359723788680405136237000
• The square root of 81749109330 is 285918.0115522629
• The cube root of 81749109330 is 4340.0461059965

Scales and comparisons

• 81,749,109,330 seconds is equal to 2,599 years, 19 weeks, 1 day, 5 hours, 55 minutes, 30 seconds.
• To count from 1 to 81,749,109,330 would take you about five thousand, one hundred ninety-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 81749109330 cubic inches would be around 361.7 feet tall.

Recreational maths with 81749109330

• 81749109330 backwards is 03390194718
• 81749109330 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81749109330's digits is 45
• More coming soon!