21280142927940

Names of 21280142927940

• Cardinal: 21280142927940 can be written as Twenty-one trillion, two hundred eighty billion, one hundred forty-two million, nine hundred twenty-seven thousand, nine hundred forty.

Scientific notation

• Scientific notation: 2.128014292794 × 10¹³

Factors of 21280142927940

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 11764

Divisors of 21280142927940

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 10 12 13 15 20 26 30 39 52 60 65 78 130 156 195 260 390 780 937 1874 2811 3748 4685 5147 5622 5657 9370 10294 11244 11314 12181 14055 15441 16971 18740 20588 22628 24362 25735 28110 28285 30882 33942 36543 48724 51470 56220 56570 60905 61764 66911 67884 73086 73541 77205 84855 102940 113140 121810 133822 146172 147082 154410 169710 182715 200733 220623 243620 267644 294164 308820 334555 339420 365430 367705 401466 441246 669110 730860 735410 802932 882492 1003665 1103115 1338220 1470820 2007330 2206230 4014660 4412460 4822739 5300609 9645478 10601218 14468217 15901827 19290956 21202436 24113695 26503045 28936434 29116579 31803654 48227390 53006090 57872868 58233158 62695607 63607308 68907917 72341085 79509135 87349737 96454780 106012180 116466316 125391214 137815834 144682170 145582895 159018270 174699474 188086821 206723751 250782428 275631668 289364340 291165790 313478035 318036540 344539585 349398948 376173642 378515527 413447502 436748685 582331580 626956070 689079170 752347284 757031054 826895004 873497370 940434105 1033618755 1135546581 1253912140 1378158340 1514062108 1746994740 1880868210 1892577635 2067237510 2271093162 3761736420 3785155270 4134475020 4542186324 5677732905 7570310540 11355465810 22710931620 27282234523 54564469046 81846703569 109128938092 136411172615 163693407138 272822345230 327386814276 354669048799 409233517845 545644690460 709338097598 818467035690 1064007146397 1418676195196 1636934071380 1773345243995 2128014292794 3546690487990 4256028585588 5320035731985 7093380975980 10640071463970 21280142927940
• Sum of all divisors σ(n): 64260135523584
• Sum of proper divisors (its aliquot sum) s(n): 42979992595644
• 21280142927940 is an abundant number, because the sum of its proper divisors (42979992595644) is greater than itself. Its abundance is 21699849667704

Bases of 21280142927940

• Binary: 100110101101010101011010111000010100001000100₂
• Hexadecimal: 0x135AAB5C2844
• Base-36: 7JJYNNUBO

Squares and roots of 21280142927940

• 21280142927940 squared (21280142927940²) is 452844483033554796032643600
• 21280142927940 cubed (21280142927940³) is 9636595323083146410512529873922502184000
• The square root of 21280142927940 is 4613040.5296225179
• The cube root of 21280142927940 is 27711.3816859601

Scales and comparisons

• 21,280,142,927,940 seconds is equal to 676,642 years, 37 weeks, 3 days, 13 hours, 19 minutes.
• To count from 1 to 21,280,142,927,940 would take you about one million, six hundred ninety-one thousand, six hundred six 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 21280142927940 cubic inches would be around 2309.3 feet tall.

Recreational maths with 21280142927940

• 21280142927940 backwards is 04972924108212
• The number of decimal digits it has is: 14
• The sum of 21280142927940's digits is 51
• More coming soon!