21020141636

Names of 21020141636

• Cardinal: 21020141636 can be written as Twenty-one billion, twenty million, one hundred forty-one thousand, six hundred thirty-six.

Scientific notation

• Scientific notation: 2.1020141636 × 10¹⁰

Factors of 21020141636

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 141082

Divisors of 21020141636

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 13 19 26 38 52 76 151 247 302 494 604 988 1963 2869 3926 5738 7852 11476 37297 74594 140897 149188 281794 563588 1831661 2677043 3663322 5354086 7326644 10708172 21275447 34801559 42550894 69603118 85101788 139206236 276580811 404233493 553161622 808466986 1106323244 1616933972 5255035409 10510070818 21020141636
• Sum of all divisors σ(n): 41976332160
• Sum of proper divisors (its aliquot sum) s(n): 20956190524
• 21020141636 is a deficient number, because the sum of its proper divisors (20956190524) is less than itself. Its deficiency is 63951112

Bases of 21020141636

• Binary: 10011100100111001011110100001000100₂
• Hexadecimal: 0x4E4E5E844
• Base-36: 9NMUL38

Squares and roots of 21020141636

• 21020141636 squared (21020141636²) is 441846354397500756496
• 21020141636 cubed (21020141636³) is 9287672950785717345963067067456
• The square root of 21020141636 is 144983.2460527767
• The cube root of 21020141636 is 2759.8059460639

Scales and comparisons

• 21,020,141,636 seconds is equal to 668 years, 19 weeks, 3 days, 16 hours, 13 minutes, 56 seconds.
• To count from 1 to 21,020,141,636 would take you about one thousand, three hundred thirty-six 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 21020141636 cubic inches would be around 230 feet tall.

Recreational maths with 21020141636

• 21020141636 backwards is 63614102012
• 21020141636 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21020141636's digits is 26
• More coming soon!