21439404540

Names of 21439404540

• Cardinal: 21439404540 can be written as Twenty-one billion, four hundred thirty-nine million, four hundred four thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.143940454 × 10¹⁰

Factors of 21439404540

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 6311

Divisors of 21439404540

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 6301 12602 18903 25204 31505 37806 56709 63010 75612 94515 113418 126020 170127 189030 226836 283545 340254 378060 567090 680508 850635 1134180 1701270 3402540 39702601 79405202 119107803 158810404 198513005 238215606 357323409 397026010 476431212 595539015 714646818 794052020 1071970227 1191078030 1429293636 1786617045 2143940454 2382156060 3573234090 4287880908 5359851135 7146468180 10719702270 21439404540
• Sum of all divisors σ(n): 66710957040
• Sum of proper divisors (its aliquot sum) s(n): 45271552500
• 21439404540 is an abundant number, because the sum of its proper divisors (45271552500) is greater than itself. Its abundance is 23832147960

Bases of 21439404540

• Binary: 10011111101111000110101100111111100₂
• Hexadecimal: 0x4FDE359FC
• Base-36: 9UKGUF0

Squares and roots of 21439404540

• 21439404540 squared (21439404540²) is 459648067029772611600
• 21439404540 cubed (21439404540³) is 9854580855080331244304696664000
• The square root of 21439404540 is 146422.0083867177
• The cube root of 21439404540 is 2778.0341043259

Scales and comparisons

• 21,439,404,540 seconds is equal to 681 years, 36 weeks, 5 days, 6 hours, 9 minutes.
• To count from 1 to 21,439,404,540 would take you about one thousand, three hundred sixty-three 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 21439404540 cubic inches would be around 231.5 feet tall.

Recreational maths with 21439404540

• 21439404540 backwards is 04540493412
• 21439404540 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21439404540's digits is 36
• More coming soon!