21304761920

Names of 21304761920

• Cardinal: 21304761920 can be written as Twenty-one billion, three hundred four million, seven hundred sixty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.130476192 × 10¹⁰

Factors of 21304761920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 7506

Divisors of 21304761920

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 40 52 53 64 65 80 104 106 130 160 169 208 212 260 265 320 338 416 424 520 530 676 689 832 845 848 1040 1060 1352 1378 1690 1696 2080 2120 2704 2756 3380 3392 3445 4160 4240 5408 5512 6760 6890 7433 8480 8957 10816 11024 13520 13780 14866 16960 17914 22048 27040 27560 29732 35828 37165 44096 44785 54080 55120 59464 71656 74330 89570 96629 110240 118928 143312 148660 179140 193258 220480 237856 286624 297320 358280 386516 393949 475712 483145 573248 594640 716560 773032 787898 966290 1189280 1256177 1433120 1546064 1575796 1932580 1969745 2378560 2512354 2866240 3092128 3151592 3865160 3939490 5024708 5121337 6184256 6280885 6303184 7730320 7878980 10049416 10242674 12561770 12606368 15460640 15757960 20098832 20485348 25123540 25212736 25606685 30921280 31515920 40197664 40970696 50247080 51213370 63031840 66577381 80395328 81941392 100494160 102426740 126063680 133154762 163882784 200988320 204853480 266309524 327765568 332886905 401976640 409706960 532619048 665773810 819413920 1065238096 1331547620 1638827840 2130476192 2663095240 4260952384 5326190480 10652380960 21304761920
• Sum of all divisors σ(n): 55978644456
• Sum of proper divisors (its aliquot sum) s(n): 34673882536
• 21304761920 is an abundant number, because the sum of its proper divisors (34673882536) is greater than itself. Its abundance is 13369120616

Bases of 21304761920

• Binary: 10011110101110111001101111001000000₂
• Hexadecimal: 0x4F5DCDE40
• Base-36: 9SCAZI8

Squares and roots of 21304761920

• 21304761920 squared (21304761920²) is 453892880467882086400
• 21304761920 cubed (21304761920³) is 9670079755551246057384869888000
• The square root of 21304761920 is 145961.5083506607
• The cube root of 21304761920 is 2772.2063997757

Scales and comparisons

• 21,304,761,920 seconds is equal to 677 years, 22 weeks, 21 hours, 25 minutes, 20 seconds.
• To count from 1 to 21,304,761,920 would take you about one thousand, three hundred fifty-four 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 21304761920 cubic inches would be around 231 feet tall.

Recreational maths with 21304761920

• 21304761920 backwards is 02916740312
• The number of decimal digits it has is: 11
• The sum of 21304761920's digits is 35
• More coming soon!