81827191545428

Names of 81827191545428

• Cardinal: 81827191545428 can be written as Eighty-one trillion, eight hundred twenty-seven billion, one hundred ninety-one million, five hundred forty-five thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 8.1827191545428 × 10¹³

Factors of 81827191545428

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 58670

Divisors of 81827191545428

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 14 23 28 37 46 74 92 148 161 259 322 518 644 851 1036 1702 3404 5957 11914 23828 58601 117202 234404 410207 820414 1347823 1640828 2168237 2695646 4336474 5391292 8672948 9434761 15177659 18869522 30355318 37739044 49869451 60710636 99738902 199477804 349086157 698172314 1396344628 3434077201 6868154402 13736308804 24038540407 48077080814 78983775623 96154161628 127060856437 157967551246 254121712874 315935102492 508243425748 552886429361 889425995059 1105772858722 1778851990118 2211545717444 2922399698051 3557703980236 5844799396102 11689598792204 20456797886357 40913595772714 81827191545428
• Sum of all divisors σ(n): 175388183730816
• Sum of proper divisors (its aliquot sum) s(n): 93560992185388
• 81827191545428 is an abundant number, because the sum of its proper divisors (93560992185388) is greater than itself. Its abundance is 11733800639960

Bases of 81827191545428

• Binary: 10010100110101111100000101011110101111001010100₂
• Hexadecimal: 0x4A6BE0AF5E54
• Base-36: T06W54PCK

Squares and roots of 81827191545428

• 81827191545428 squared (81827191545428²) is 6695689276212163562987703184
• 81827191545428 cubed (81827191545428³) is 547889448933280874937683266921733116242752
• The square root of 81827191545428 is 9045838.3550353141
• The cube root of 81827191545428 is 43414.2745674045

Scales and comparisons

• 81,827,191,545,428 seconds is equal to 2,601,851 years, 30 weeks, 2 days, 5 hours, 17 minutes, 8 seconds.
• To count from 1 to 81,827,191,545,428 would take you about six million, five hundred four thousand, six hundred twenty-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 81827191545428 cubic inches would be around 3617.9 feet tall.

Recreational maths with 81827191545428

• 81827191545428 backwards is 82454519172818
• The number of decimal digits it has is: 14
• The sum of 81827191545428's digits is 65
• More coming soon!