81021226832

Names of 81021226832

• Cardinal: 81021226832 can be written as Eighty-one billion, twenty-one million, two hundred twenty-six thousand, eight hundred thirty-two.

Scientific notation

• Scientific notation: 8.1021226832 × 10¹⁰

Factors of 81021226832

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 699

Divisors of 81021226832

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 4 7 8 13 14 16 26 28 29 52 56 58 91 104 112 116 127 182 203 208 232 254 364 377 406 464 508 521 728 754 812 841 889 1016 1042 1456 1508 1624 1651 1682 1778 2032 2084 2639 3016 3248 3302 3364 3556 3647 3683 4168 5278 5887 6032 6604 6728 6773 7112 7294 7366 8336 10556 10933 11557 11774 13208 13456 13546 14224 14588 14732 15109 21112 21866 23114 23548 25781 26416 27092 29176 29464 30218 42224 43732 46228 47096 47411 47879 51562 54184 58352 58928 60436 66167 76531 87464 92456 94192 94822 95758 103124 105763 106807 108368 120872 132334 153062 174928 184912 189644 191516 196417 206248 211526 213614 241744 264668 306124 335153 379288 383032 392834 412496 423052 427228 438161 463169 529336 612248 670306 747649 758576 766064 785668 846104 854456 860171 876322 926338 1058672 1224496 1340612 1374919 1388491 1495298 1571336 1692208 1708912 1720342 1752644 1852676 1918843 2681224 2749838 2776982 2990596 3067127 3142672 3440684 3505288 3705352 3837686 5362448 5499676 5553964 5696093 5981192 6021197 6134254 6881368 7010576 7410704 7675372 9719437 10999352 11107928 11392186 11962384 12042394 12268508 13431901 13762736 15350744 19438874 21998704 22215856 22784372 24084788 24537016 24944959 26863802 30701488 38877748 39872651 45568744 48169576 49074032 49889918 53727604 55646447 77755496 79745302 91137488 96339152 99779836 107455208 111292894 155510992 159490604 174614713 199559672 214910416 222585788 318981208 349229426 389525129 399119344 445171576 637962416 698458852 723403811 779050258 890343152 1396917704 1446807622 1558100516 2793835408 2893615244 3116201032 5063826677 5787230488 6232402064 10127653354 11574460976 20255306708 40510613416 81021226832
• Sum of all divisors σ(n): 202059067392
• Sum of proper divisors (its aliquot sum) s(n): 121037840560
• 81021226832 is an abundant number, because the sum of its proper divisors (121037840560) is greater than itself. Its abundance is 40016613728

Bases of 81021226832

• Binary: 1001011011101001111011100111101010000₂
• Hexadecimal: 0x12DD3DCF50
• Base-36: 117XY2Q8

Squares and roots of 81021226832

• 81021226832 squared (81021226832²) is 6564439197362396756224
• 81021226832 cubed (81021226832³) is 531858917234370763693205711802368
• The square root of 81021226832 is 284642.2787148811
• The cube root of 81021226832 is 4327.1266333353

Scales and comparisons

• 81,021,226,832 seconds is equal to 2,576 years, 11 weeks, 4 days, 16 hours, 20 minutes, 32 seconds.
• To count from 1 to 81,021,226,832 would take you about five thousand, one hundred fifty-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 81021226832 cubic inches would be around 360.6 feet tall.

Recreational maths with 81021226832

• 81021226832 backwards is 23862212018
• The number of decimal digits it has is: 11
• The sum of 81021226832's digits is 35
• More coming soon!