81480672

Names of 81480672

• Cardinal: 81480672 can be written as Eighty-one million, four hundred eighty thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 8.1480672 × 10⁷

Factors of 81480672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3134

Divisors of 81480672

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 13 14 16 18 21 24 26 28 32 36 39 42 48 52 56 63 72 78 84 91 96 104 112 117 126 144 156 168 182 208 224 234 252 273 288 312 336 364 416 468 504 546 624 672 728 819 936 1008 1092 1248 1456 1638 1872 2016 2184 2912 3109 3276 3744 4368 6218 6552 8736 9327 12436 13104 18654 21763 24872 26208 27981 37308 40417 43526 49744 55962 65289 74616 80834 87052 99488 111924 121251 130578 149232 161668 174104 195867 223848 242502 261156 282919 298464 323336 348208 363753 391734 447696 485004 522312 565838 646672 696416 727506 783468 848757 895392 970008 1044624 1131676 1293344 1455012 1566936 1697514 1940016 2089248 2263352 2546271 2910024 3133872 3395028 3880032 4526704 5092542 5820048 6267744 6790056 9053408 10185084 11640096 13580112 20370168 27160224 40740336 81480672
• Sum of all divisors σ(n): 285274080
• Sum of proper divisors (its aliquot sum) s(n): 203793408
• 81480672 is an abundant number, because the sum of its proper divisors (203793408) is greater than itself. Its abundance is 122312736

Bases of 81480672

• Binary: 100110110110100101111100000₂
• Hexadecimal: 0x4DB4BE0
• Base-36: 1CIEW0

Squares and roots of 81480672

• 81480672 squared (81480672²) is 6639099909571584
• 81480672 cubed (81480672³) is 540958322107031896424448
• The square root of 81480672 is 9026.6645002461
• The cube root of 81480672 is 433.5290466363

Scales and comparisons

• 81,480,672 seconds is equal to 2 years, 30 weeks, 5 days, 1 hour, 31 minutes, 12 seconds.
• To count from 1 to 81,480,672 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 81480672 cubic inches would be around 36.1 feet tall.

Recreational maths with 81480672

• 81480672 backwards is 27608418
• 81480672 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 81480672's digits is 36
• More coming soon!