21421958520

Names of 21421958520

• Cardinal: 21421958520 can be written as Twenty-one billion, four hundred twenty-one million, nine hundred fifty-eight thousand, five hundred twenty.

Scientific notation

• Scientific notation: 2.142195852 × 10¹⁰

Factors of 21421958520

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 472

Divisors of 21421958520

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 20 24 30 31 40 60 62 93 120 124 155 186 248 310 372 431 465 620 744 862 930 961 1240 1293 1724 1860 1922 2155 2586 2883 3448 3720 3844 4310 4805 5172 5766 6465 7688 8620 9610 10344 11532 12930 13361 14415 17240 19220 23064 25860 26722 28830 38440 40083 51720 53444 57660 66805 80166 106888 115320 133610 160332 185761 200415 267220 320664 371522 400830 414191 534440 557283 743044 801660 828382 928805 1114566 1242573 1486088 1603320 1656764 1857610 2070955 2229132 2485146 2786415 3313528 3715220 4141910 4458264 4970292 5572830 5758591 6212865 7430440 8283820 9940584 11145660 11517182 12425730 16567640 17275773 22291320 23034364 24851460 28792955 34551546 46068728 49702920 57585910 69103092 86378865 115171820 138206184 172757730 178516321 230343640 345515460 357032642 535548963 691030920 714065284 892581605 1071097926 1428130568 1785163210 2142195852 2677744815 3570326420 4284391704 5355489630 7140652840 10710979260 21421958520
• Sum of all divisors σ(n): 66560273640
• Sum of proper divisors (its aliquot sum) s(n): 45138315120
• 21421958520 is an abundant number, because the sum of its proper divisors (45138315120) is greater than itself. Its abundance is 23716356600

Bases of 21421958520

• Binary: 10011111100110110010010010101111000₂
• Hexadecimal: 0x4FCD92578
• Base-36: 9UA2WZC

Squares and roots of 21421958520

• 21421958520 squared (21421958520²) is 458900306832600590400
• 21421958520 cubed (21421958520³) is 9830543337783242431276310208000
• The square root of 21421958520 is 146362.4218165305
• The cube root of 21421958520 is 2777.2803708523

Scales and comparisons

• 21,421,958,520 seconds is equal to 681 years, 7 weeks, 6 days, 8 hours, 2 minutes.
• To count from 1 to 21,421,958,520 would take you about one thousand, three hundred sixty-two 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 21421958520 cubic inches would be around 231.4 feet tall.

Recreational maths with 21421958520

• 21421958520 backwards is 02585912412
• The number of decimal digits it has is: 11
• The sum of 21421958520's digits is 39
• More coming soon!