21432605840

Names of 21432605840

• Cardinal: 21432605840 can be written as Twenty-one billion, four hundred thirty-two million, six hundred five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.143260584 × 10¹⁰

Factors of 21432605840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 7998

Divisors of 21432605840

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 34 40 68 80 85 136 170 272 340 680 1360 3617 4357 7234 8714 14468 17428 18085 21785 28936 34856 36170 43570 57872 61489 69712 72340 74069 87140 122978 144680 148138 174280 245956 289360 296276 307445 348560 370345 491912 592552 614890 740690 983824 1185104 1229780 1481380 2459560 2962760 4919120 5925520 15759269 31518538 63037076 78796345 126074152 157592690 252148304 267907573 315185380 535815146 630370760 1071630292 1260741520 1339537865 2143260584 2679075730 4286521168 5358151460 10716302920 21432605840
• Sum of all divisors σ(n): 52788732912
• Sum of proper divisors (its aliquot sum) s(n): 31356127072
• 21432605840 is an abundant number, because the sum of its proper divisors (31356127072) is greater than itself. Its abundance is 9923521232

Bases of 21432605840

• Binary: 10011111101011110111001110010010000₂
• Hexadecimal: 0x4FD7B9C90
• Base-36: 9UGF4I8

Squares and roots of 21432605840

• 21432605840 squared (21432605840²) is 459356593092802105600
• 21432605840 cubed (21432605840³) is 9845208799763294070446856704000
• The square root of 21432605840 is 146398.7904321617
• The cube root of 21432605840 is 2777.7404236375

Scales and comparisons

• 21,432,605,840 seconds is equal to 681 years, 25 weeks, 3 days, 13 hours, 37 minutes, 20 seconds.
• To count from 1 to 21,432,605,840 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 21432605840 cubic inches would be around 231.5 feet tall.

Recreational maths with 21432605840

• 21432605840 backwards is 04850623412
• The number of decimal digits it has is: 11
• The sum of 21432605840's digits is 35
• More coming soon!