21215629470

Names of 21215629470

• Cardinal: 21215629470 can be written as Twenty-one billion, two hundred fifteen million, six hundred twenty-nine thousand, four hundred seventy.

Scientific notation

• Scientific notation: 2.121562947 × 10¹⁰

Factors of 21215629470

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 177

Divisors of 21215629470

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 5 6 7 10 14 15 21 29 30 35 42 49 58 70 87 98 105 131 145 147 174 203 210 245 262 290 294 393 406 435 490 609 655 735 786 841 870 917 1015 1218 1310 1421 1470 1682 1834 1965 2030 2523 2751 2842 3045 3799 3930 4205 4263 4585 5046 5502 5887 6090 6419 7105 7598 8410 8526 9170 11397 11774 12615 12838 13755 14210 17161 17661 18995 19257 21315 22794 25230 26593 27510 29435 32095 34322 35322 37990 38514 41209 42630 51483 53186 56985 58870 64190 79779 82418 85805 88305 96285 102966 110171 113970 120127 123627 132965 159558 171610 176610 186151 192570 206045 220342 240254 247254 257415 265930 330513 360381 372302 398895 412090 497669 514830 550855 558453 600635 618135 661026 720762 771197 797790 840889 930755 995338 1101710 1116906 1201270 1236270 1493007 1542394 1652565 1681778 1801905 1861510 2313591 2488345 2522667 2792265 2986014 3305130 3483683 3603810 3855985 4204445 4627182 4976690 5045334 5398379 5584530 6967366 7465035 7711970 8408890 10451049 10796758 11567955 12613335 14432401 14930070 16195137 17418415 20902098 23135910 24385781 25226670 26991895 28864802 32390274 34836830 43297203 48771562 52255245 53983790 72162005 73157343 80975685 86594406 101026807 104510490 121928905 144324010 146314686 161951370 202053614 216486015 243857810 303080421 365786715 432972030 505134035 606160842 707187649 731573430 1010268070 1414375298 1515402105 2121562947 3030804210 3535938245 4243125894 7071876490 10607814735 21215629470
• Sum of all divisors σ(n): 61815281112
• Sum of proper divisors (its aliquot sum) s(n): 40599651642
• 21215629470 is an abundant number, because the sum of its proper divisors (40599651642) is greater than itself. Its abundance is 19384022172

Bases of 21215629470

• Binary: 10011110000100011001101000010011110₂
• Hexadecimal: 0x4F08CD09E
• Base-36: 9QV8KGU

Squares and roots of 21215629470

• 21215629470 squared (21215629470²) is 450102933808332480900
• 21215629470 cubed (21215629470³) is 9549217067037517913340252123000
• The square root of 21215629470 is 145655.8597173489
• The cube root of 21215629470 is 2768.3349814243

Scales and comparisons

• 21,215,629,470 seconds is equal to 674 years, 30 weeks, 5 days, 6 hours, 24 minutes, 30 seconds.
• To count from 1 to 21,215,629,470 would take you about one thousand, three hundred forty-nine 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 21215629470 cubic inches would be around 230.7 feet tall.

Recreational maths with 21215629470

• 21215629470 backwards is 07492651212
• The number of decimal digits it has is: 11
• The sum of 21215629470's digits is 39
• More coming soon!