21420624320

Names of 21420624320

• Cardinal: 21420624320 can be written as Twenty-one billion, four hundred twenty million, six hundred twenty-four thousand, three hundred twenty.

Scientific notation

• Scientific notation: 2.142062432 × 10¹⁰

Factors of 21420624320

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1903

Divisors of 21420624320

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 38 40 64 76 80 95 152 160 190 304 320 380 608 760 1216 1520 1877 3040 3754 6080 7508 9385 15016 18770 30032 35663 37540 60064 71326 75080 120128 142652 150160 178315 285304 300320 356630 570608 600640 713260 1141216 1426520 2282432 2853040 3523129 5706080 7046258 11412160 14092516 17615645 28185032 35231290 56370064 66939451 70462580 112740128 133878902 140925160 225480256 267757804 281850320 334697255 535515608 563700640 669394510 1071031216 1127401280 1338789020 2142062432 2677578040 4284124864 5355156080 10710312160 21420624320
• Sum of all divisors σ(n): 53721106680
• Sum of proper divisors (its aliquot sum) s(n): 32300482360
• 21420624320 is an abundant number, because the sum of its proper divisors (32300482360) is greater than itself. Its abundance is 10879858040

Bases of 21420624320

• Binary: 10011111100110001001100100111000000₂
• Hexadecimal: 0x4FCC4C9C0
• Base-36: 9U9ABI8

Squares and roots of 21420624320

• 21420624320 squared (21420624320²) is 458843146258575462400
• 21420624320 cubed (21420624320³) is 9828706657811758558440685568000
• The square root of 21420624320 is 146357.8638816515
• The cube root of 21420624320 is 2777.2227115677

Scales and comparisons

• 21,420,624,320 seconds is equal to 681 years, 5 weeks, 4 days, 21 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,420,624,320 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 21420624320 cubic inches would be around 231.4 feet tall.

Recreational maths with 21420624320

• 21420624320 backwards is 02342602412
• The number of decimal digits it has is: 11
• The sum of 21420624320's digits is 26
• More coming soon!