21729293740

Names of 21729293740

• Cardinal: 21729293740 can be written as Twenty-one billion, seven hundred twenty-nine million, two hundred ninety-three thousand, seven hundred forty.

Scientific notation

• Scientific notation: 2.172929374 × 10¹⁰

Factors of 21729293740

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 10626

Divisors of 21729293740

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 7 10 11 14 20 22 28 35 44 55 70 77 110 121 140 154 220 242 308 385 484 605 770 847 1210 1331 1540 1694 2420 2662 3388 4235 5324 6655 8470 9317 10601 13310 14641 16940 18634 21202 26620 29282 37268 42404 46585 53005 58564 73205 74207 93170 102487 106010 116611 146410 148414 186340 204974 212020 233222 292820 296828 371035 409948 466444 512435 583055 742070 816277 1024870 1166110 1282721 1484140 1632554 2049740 2332220 2565442 3265108 4081385 5130884 6413605 8162770 8979047 12827210 14109931 16325540 17958094 25654420 28219862 35916188 44895235 56439724 70549655 89790470 98769517 141099310 155209241 179580940 197539034 282198620 310418482 395078068 493847585 620836964 776046205 987695170 1086464687 1552092410 1975390340 2172929374 3104184820 4345858748 5432323435 10864646870 21729293740
• Sum of all divisors σ(n): 57370390560
• Sum of proper divisors (its aliquot sum) s(n): 35641096820
• 21729293740 is an abundant number, because the sum of its proper divisors (35641096820) is greater than itself. Its abundance is 13911803080

Bases of 21729293740

• Binary: 10100001111001010101011010110101100₂
• Hexadecimal: 0x50F2AB5AC
• Base-36: 9ZD26CS

Squares and roots of 21729293740

• 21729293740 squared (21729293740²) is 472162206439203187600
• 21729293740 cubed (21729293740³) is 10259751276643965514904725624000
• The square root of 21729293740 is 147408.5945255567
• The cube root of 21729293740 is 2790.4989939231

Scales and comparisons

• 21,729,293,740 seconds is equal to 690 years, 48 weeks, 10 hours, 55 minutes, 40 seconds.
• To count from 1 to 21,729,293,740 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 21729293740 cubic inches would be around 232.5 feet tall.

Recreational maths with 21729293740

• 21729293740 backwards is 04739292712
• The number of decimal digits it has is: 11
• The sum of 21729293740's digits is 46
• More coming soon!