21393713172

Names of 21393713172

• Cardinal: 21393713172 can be written as Twenty-one billion, three hundred ninety-three million, seven hundred thirteen thousand, one hundred seventy-two.

Scientific notation

• Scientific notation: 2.1393713172 × 10¹⁰

Factors of 21393713172

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2040

Divisors of 21393713172

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 6 12 13 17 26 34 39 51 52 59 68 73 78 102 118 146 156 177 204 219 221 236 292 354 438 442 663 708 767 876 884 949 1003 1241 1326 1534 1873 1898 2006 2301 2482 2652 2847 3009 3068 3723 3746 3796 4012 4307 4602 4964 5619 5694 6018 7446 7492 8614 9204 11238 11388 12036 12921 13039 14892 16133 17228 22476 24349 25842 26078 31841 32266 39117 48399 48698 51684 52156 55991 63682 64532 73047 73219 78234 95523 96798 97396 110507 111982 127364 136729 146094 146438 156468 167973 191046 193596 219657 221014 223964 273458 292188 292876 331521 335946 382092 410187 413933 439314 442028 546916 663042 671892 820374 827866 878628 951847 1241799 1326084 1436591 1640748 1655732 1777477 1878619 1903694 2324393 2483598 2855541 2873182 3554954 3757238 3807388 4309773 4648786 4967196 5332431 5635857 5711082 5746364 6973179 7109908 7514476 8067011 8619546 9297572 10664862 11271714 11422164 13946358 16134022 17239092 21329724 22543428 24201033 24422047 27892716 30217109 32268044 48402066 48844094 60434218 73266141 90651327 96804132 97688188 104871143 120868436 137139187 146532282 181302654 209742286 274278374 293064564 314613429 362605308 411417561 419484572 548556748 629226858 822835122 1258453716 1645670244 1782809431 3565618862 5348428293 7131237724 10696856586 21393713172
• Sum of all divisors σ(n): 58709871360
• Sum of proper divisors (its aliquot sum) s(n): 37316158188
• 21393713172 is an abundant number, because the sum of its proper divisors (37316158188) is greater than itself. Its abundance is 15922445016

Bases of 21393713172

• Binary: 10011111011001010100010100000010100₂
• Hexadecimal: 0x4FB2A2814
• Base-36: 9TT9IQC

Squares and roots of 21393713172

• 21393713172 squared (21393713172²) is 457690963285806301584
• 21393713172 cubed (21393713172³) is 9791709189952922674838225264448
• The square root of 21393713172 is 146265.8988691485
• The cube root of 21393713172 is 2776.0591978357

Scales and comparisons

• 21,393,713,172 seconds is equal to 680 years, 13 weeks, 1 day, 10 hours, 6 minutes, 12 seconds.
• To count from 1 to 21,393,713,172 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 21393713172 cubic inches would be around 231.3 feet tall.

Recreational maths with 21393713172

• 21393713172 backwards is 27131739312
• 21393713172 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21393713172's digits is 39
• More coming soon!