21729421591643376

Names of 21729421591643376

• Cardinal: 21729421591643376 can be written as Twenty-one quadrillion, seven hundred twenty-nine trillion, four hundred twenty-one billion, five hundred ninety-one million, six hundred forty-three thousand, three hundred seventy-six.

Scientific notation

• Scientific notation: 2.1729421591643376 × 10¹⁶

Factors of 21729421591643376

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 23381556

Divisors of 21729421591643376

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 72 78 104 108 117 144 156 208 216 234 312 351 432 468 624 702 936 1404 1872 2808 5616 166669 333338 500007 666676 1000014 1333352 1500021 2000028 2166697 2666704 3000042 4000056 4333394 4500063 6000084 6500091 8000112 8666788 9000126 12000168 13000182 17333576 18000252 19500273 23214869 24000336 26000364 34667152 36000504 39000546 46429738 52000728 58500819 69644607 72001008 78001092 92859476 104001456 117001638 139289214 156002184 185718952 208933821 234003276 278578428 301793297 312004368 371437904 417867642 468006552 557156856 603586594 626801463 835735284 905379891 936013104 1114313712 1207173188 1253602926 1671470568 1810759782 2414346376 2507205852 2716139673 3342941136 3621519564 4828692752 5014411704 5432279346 7243039128 8148419019 10028823408 10864558692 14486078256 16296838038 21729117384 32593676076 43458234768 65187352152 130374704304 3869199001361 7738398002722 11607597004083 15476796005444 23215194008166 30953592010888 34822791012249 46430388016332 50299587017693 61907184021776 69645582024498 92860776032664 100599174035386 104468373036747 139291164048996 150898761053079 185721552065328 201198348070772 208936746073494 278582328097992 301797522106158 402396696141544 417873492146988 452696283159237 557164656195984 603595044212316 804793392283088 835746984293976 905392566318474 1207190088424632 1358088849477711 1671493968587952 1810785132636948 2414380176849264 2716177698955422 3621570265273896 5432355397910844 7243140530547792 10864710795821688 21729421591643376
• Sum of all divisors σ(n): 67169700567144000
• Sum of proper divisors (its aliquot sum) s(n): 45440278975500624
• 21729421591643376 is an abundant number, because the sum of its proper divisors (45440278975500624) is greater than itself. Its abundance is 23710857383857248

Bases of 21729421591643376

• Binary: 1001101001100101100101100110111001001010000010011110000₂
• Hexadecimal: 0x4D32CB372504F0
• Base-36: 5XYFQGYMHO0

Squares and roots of 21729421591643376

• 21729421591643376 squared (21729421591643376²) is 472167762707377347972476364677376
• 21729421591643376 cubed (21729421591643376³) is 10259932377851631366517069600986903757225887461376
• The square root of 21729421591643376 is 147409028.1890609847
• The cube root of 21729421591643376 is 279050.4466860239

Scales and comparisons

• 21,729,421,591,643,376 seconds is equal to 690,928,393 years, 5 weeks, 1 day, 11 hours, 9 minutes, 36 seconds.
• To count from 1 to 21,729,421,591,643,376 would take you about two billion, seventy-two million, seven hundred eighty-five thousand, one hundred seventy-nine 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 21729421591643376 cubic inches would be around 23254.2 feet tall.

Recreational maths with 21729421591643376

• 21729421591643376 backwards is 67334619512492712
• 21729421591643376 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 21729421591643376's digits is 72
• More coming soon!