21189073840

Names of 21189073840

• Cardinal: 21189073840 can be written as Twenty-one billion, one hundred eighty-nine million, seventy-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.118907384 × 10¹⁰

Factors of 21189073840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2020

Divisors of 21189073840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 23 40 44 46 55 80 88 92 110 115 176 184 220 230 253 368 440 460 506 529 880 920 1012 1058 1265 1840 1979 2024 2116 2530 2645 3958 4048 4232 5060 5290 5819 7916 8464 9895 10120 10580 11638 12167 15832 19790 20240 21160 21769 23276 24334 29095 31664 39580 42320 43538 45517 46552 48668 58190 60835 79160 87076 91034 93104 97336 108845 116380 121670 133837 158320 174152 182068 194672 217690 227585 232760 243340 267674 348304 364136 435380 455170 465520 486680 500687 535348 669185 728272 870760 910340 973360 1001374 1046891 1070696 1338370 1741520 1820680 2002748 2093782 2141392 2503435 2676740 3641360 4005496 4187564 5006870 5234455 5353480 8010992 8375128 10013740 10468910 10706960 11515801 16750256 20027480 20937820 23031602 24078493 40054960 41875640 46063204 48156986 57579005 83751280 92126408 96313972 115158010 120392465 184252816 192627944 230316020 240784930 264863423 385255888 460632040 481569860 529726846 921264080 963139720 1059453692 1324317115 1926279440 2118907384 2648634230 4237814768 5297268460 10594536920 21189073840
• Sum of all divisors σ(n): 56214259200
• Sum of proper divisors (its aliquot sum) s(n): 35025185360
• 21189073840 is an abundant number, because the sum of its proper divisors (35025185360) is greater than itself. Its abundance is 13836111520

Bases of 21189073840

• Binary: 10011101110111101111001101110110000₂
• Hexadecimal: 0x4EEF79BB0
• Base-36: 9QFFE0G

Squares and roots of 21189073840

• 21189073840 squared (21189073840²) is 448976850196972345600
• 21189073840 cubed (21189073840³) is 9513403631274265575356399104000
• The square root of 21189073840 is 145564.6723624933
• The cube root of 21189073840 is 2767.1794563773

Scales and comparisons

• 21,189,073,840 seconds is equal to 673 years, 38 weeks, 5 days, 21 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,189,073,840 would take you about one thousand, three hundred forty-seven 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 21189073840 cubic inches would be around 230.6 feet tall.

Recreational maths with 21189073840

• 21189073840 backwards is 04837098112
• The number of decimal digits it has is: 11
• The sum of 21189073840's digits is 43
• More coming soon!