21401439840

Names of 21401439840

• Cardinal: 21401439840 can be written as Twenty-one billion, four hundred one million, four hundred thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.140143984 × 10¹⁰

Factors of 21401439840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 450388

Divisors of 21401439840

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 11 12 15 16 18 20 22 24 27 30 32 33 36 40 44 45 48 54 55 60 66 72 80 88 90 96 99 108 110 120 132 135 144 160 165 176 180 198 216 220 240 264 270 288 297 330 352 360 396 432 440 480 495 528 540 594 660 720 792 864 880 990 1056 1080 1188 1320 1440 1485 1584 1760 1980 2160 2376 2640 2970 3168 3960 4320 4752 5280 5940 7920 9504 11880 15840 23760 47520 450367 900734 1351101 1801468 2251835 2702202 3602936 4053303 4503670 4954037 5404404 6755505 7205872 8106606 9007340 9908074 10808808 12159909 13511010 14411744 14862111 16213212 18014680 19816148 20266515 21617616 24319818 24770185 27022020 29724222 32426424 36029360 39632296 40533030 43235232 44586333 48639636 49540370 54044040 59448444 60799545 64852848 72058720 74310555 79264592 81066060 89172666 97279272 99080740 108088080 118896888 121599090 129705696 133758999 148621110 158529184 162132120 178345332 194558544 198161480 216176160 222931665 237793776 243198180 267517998 297242220 324264240 356690664 389117088 396322960 445863330 475587552 486396360 535035996 594484440 648528480 668794995 713381328 792645920 891726660 972792720 1070071992 1188968880 1337589990 1426762656 1783453320 1945585440 2140143984 2377937760 2675179980 3566906640 4280287968 5350359960 7133813280 10700719920 21401439840
• Sum of all divisors σ(n): 81714769920
• Sum of proper divisors (its aliquot sum) s(n): 60313330080
• 21401439840 is an abundant number, because the sum of its proper divisors (60313330080) is greater than itself. Its abundance is 38911890240

Bases of 21401439840

• Binary: 10011111011101000000000111001100000₂
• Hexadecimal: 0x4FBA00E60
• Base-36: 9TXV4O0

Squares and roots of 21401439840

• 21401439840 squared (21401439840²) is 458021627225139225600
• 21401439840 cubed (21401439840³) is 9802322300477723272302587904000
• The square root of 21401439840 is 146292.3095723081
• The cube root of 21401439840 is 2776.3933630769

Scales and comparisons

• 21,401,439,840 seconds is equal to 680 years, 25 weeks, 6 days, 20 hours, 24 minutes.
• To count from 1 to 21,401,439,840 would take you about one thousand, three hundred sixty 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 21401439840 cubic inches would be around 231.4 feet tall.

Recreational maths with 21401439840

• 21401439840 backwards is 04893410412
• 21401439840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21401439840's digits is 36
• More coming soon!