21729305540

Names of 21729305540

• Cardinal: 21729305540 can be written as Twenty-one billion, seven hundred twenty-nine million, three hundred five thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.172930554 × 10¹⁰

Factors of 21729305540

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 593

Divisors of 21729305540

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 10 19 20 31 38 62 76 95 124 155 157 190 310 314 379 380 589 620 628 758 785 961 1178 1516 1570 1895 1922 2356 2945 2983 3140 3790 3844 4805 4867 5890 5966 7201 7580 9610 9734 11749 11780 11932 14402 14915 18259 19220 19468 23498 24335 28804 29830 36005 36518 46996 48670 58745 59503 59660 72010 73036 91295 92473 97340 117490 119006 144020 150877 182590 184946 223231 234980 238012 297515 301754 364219 365180 369892 446462 462365 595030 603508 728438 754385 892924 924730 1116155 1130557 1190060 1456876 1508770 1821095 1844593 1849460 2232310 2261114 2866663 3017540 3642190 3689186 4464620 4522228 5652785 5733326 6920161 7284380 7378372 9222965 11305570 11466652 13840322 14333315 18445930 22611140 27680644 28666630 34600805 35047267 36891860 57182383 57333260 69201610 70094534 114364766 138403220 140189068 175236335 228729532 285911915 350472670 571823830 700945340 1086465277 1143647660 2172930554 4345861108 5432326385 10864652770 21729305540
• Sum of all divisors σ(n): 50080564800
• Sum of proper divisors (its aliquot sum) s(n): 28351259260
• 21729305540 is an abundant number, because the sum of its proper divisors (28351259260) is greater than itself. Its abundance is 6621953720

Bases of 21729305540

• Binary: 10100001111001010101110001111000100₂
• Hexadecimal: 0x50F2AE3C4
• Base-36: 9ZD2FGK

Squares and roots of 21729305540

• 21729305540 squared (21729305540²) is 472162719250674691600
• 21729305540 cubed (21729305540³) is 10259767991195150224921671464000
• The square root of 21729305540 is 147408.6345503547
• The cube root of 21729305540 is 2790.4994990457

Scales and comparisons

• 21,729,305,540 seconds is equal to 690 years, 48 weeks, 14 hours, 12 minutes, 20 seconds.
• To count from 1 to 21,729,305,540 would take you about one thousand, three hundred eighty-one 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 21729305540 cubic inches would be around 232.5 feet tall.

Recreational maths with 21729305540

• 21729305540 backwards is 04550392712
• 21729305540 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21729305540's digits is 38
• More coming soon!