81472716

Names of 81472716

• Cardinal: 81472716 can be written as Eighty-one million, four hundred seventy-two thousand, seven hundred sixteen.

Scientific notation

• Scientific notation: 8.1472716 × 10⁷

Factors of 81472716

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 70

Divisors of 81472716

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 23 26 27 29 36 39 46 52 54 58 69 78 81 87 92 108 116 117 138 156 162 174 207 234 261 276 299 324 348 351 377 414 468 522 598 621 667 702 754 783 828 841 897 1044 1053 1131 1196 1242 1334 1404 1508 1566 1682 1794 1863 2001 2106 2262 2349 2484 2523 2668 2691 3132 3364 3393 3588 3726 4002 4212 4524 4698 5046 5382 6003 6786 7452 7569 8004 8073 8671 9396 10092 10179 10764 10933 12006 13572 15138 16146 17342 18009 19343 20358 21866 22707 24012 24219 26013 30276 30537 32292 32799 34684 36018 38686 40716 43732 45414 48438 52026 54027 58029 61074 65598 68121 72036 77372 78039 90828 96876 98397 104052 108054 116058 122148 131196 136242 156078 174087 196794 216108 232116 234117 251459 272484 295191 312156 348174 393588 468234 502918 522261 590382 696348 702351 754377 885573 936468 1005836 1044522 1180764 1404702 1508754 1566783 1771146 2089044 2263131 2809404 3017508 3133566 3542292 4526262 6267132 6789393 9052524 13578786 20368179 27157572 40736358 81472716
• Sum of all divisors σ(n): 247879632
• Sum of proper divisors (its aliquot sum) s(n): 166406916
• 81472716 is an abundant number, because the sum of its proper divisors (166406916) is greater than itself. Its abundance is 84934200

Bases of 81472716

• Binary: 100110110110010110011001100₂
• Hexadecimal: 0x4DB2CCC
• Base-36: 1CI8R0

Squares and roots of 81472716

• 81472716 squared (81472716²) is 6637803452416656
• 81472716 cubed (81472716³) is 540799875542561727957696
• The square root of 81472716 is 9026.2237951427
• The cube root of 81472716 is 433.5149358487

Scales and comparisons

• 81,472,716 seconds is equal to 2 years, 30 weeks, 4 days, 23 hours, 18 minutes, 36 seconds.
• To count from 1 to 81,472,716 would take you about three 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 81472716 cubic inches would be around 36.1 feet tall.

Recreational maths with 81472716

• 81472716 backwards is 61727418
• 81472716 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 81472716's digits is 36
• More coming soon!