4021638642

Names of 4021638642

• Cardinal: 4021638642 can be written as Four billion, twenty-one million, six hundred thirty-eight thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 4.021638642 × 10⁹

Factors of 4021638642

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 385

Divisors of 4021638642

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 23 42 46 49 63 69 98 126 127 138 147 161 207 223 254 294 322 343 381 414 441 446 483 669 686 762 882 889 966 1029 1127 1143 1338 1449 1561 1778 2007 2058 2254 2286 2667 2898 2921 3087 3122 3381 4014 4683 5129 5334 5842 6174 6223 6762 7889 8001 8763 9366 10143 10258 10927 12446 14049 15387 15778 16002 17526 18669 20286 20447 21854 23667 26289 28098 28321 30774 32781 35903 37338 40894 43561 46161 47334 52578 56007 56642 61341 65562 71001 71806 76489 84963 87122 92322 98343 107709 112014 122682 130683 142002 143129 152978 169926 184023 196686 198247 215418 229467 251321 254889 261366 286258 323127 368046 392049 396494 429387 458934 502642 509778 594741 646254 651383 688401 753963 784098 858774 1001903 1189482 1288161 1302766 1376802 1387729 1507926 1759247 1784223 1954149 2003806 2261889 2576322 2775458 3005709 3518494 3568446 3908298 4163187 4523778 4559681 5277741 5862447 6011418 8326374 9017127 9119362 9714103 10555482 11724894 12489561 13679043 15833223 18034254 19428206 24979122 27358086 29142309 31666446 31917767 41037129 58284618 63835534 82074258 87426927 95753301 174853854 191506602 223424369 287259903 446848738 574519806 670273107 1340546214 2010819321 4021638642
• Sum of all divisors σ(n): 10734796800
• Sum of proper divisors (its aliquot sum) s(n): 6713158158
• 4021638642 is an abundant number, because the sum of its proper divisors (6713158158) is greater than itself. Its abundance is 2691519516

Bases of 4021638642

• Binary: 11101111101101010101010111110010₂
• Hexadecimal: 0xEFB555F2
• Base-36: 1UIDO8I

Squares and roots of 4021638642

• 4021638642 squared (4021638642²) is 16173577366827604164
• 4021638642 cubed (4021638642³) is 65044283717810501858222505288
• The square root of 4021638642 is 63416.3909569127
• The cube root of 4021638642 is 1590.2583394163

Scales and comparisons

• 4,021,638,642 seconds is equal to 127 years, 45 weeks, 3 days, 17 hours, 50 minutes, 42 seconds.
• To count from 1 to 4,021,638,642 would take you about two hundred fifty-five 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 4021638642 cubic inches would be around 132.5 feet tall.

Recreational maths with 4021638642

• 4021638642 backwards is 2468361204
• The number of decimal digits it has is: 10
• The sum of 4021638642's digits is 36
• More coming soon!