21033540

Names of 21033540

• Cardinal: 21033540 can be written as Twenty-one million, thirty-three thousand, five hundred forty.

Scientific notation

• Scientific notation: 2.103354 × 10⁷

Factors of 21033540

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3562

Divisors of 21033540

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 9 10 11 12 15 18 20 22 27 30 33 36 44 45 54 55 60 66 90 99 108 110 132 135 165 180 198 220 270 297 330 396 495 540 594 660 990 1188 1485 1980 2970 3541 5940 7082 10623 14164 17705 21246 31869 35410 38951 42492 53115 63738 70820 77902 95607 106230 116853 127476 155804 159345 191214 194755 212460 233706 318690 350559 382428 389510 467412 478035 584265 637380 701118 779020 956070 1051677 1168530 1402236 1752795 1912140 2103354 2337060 3505590 4206708 5258385 7011180 10516770 21033540
• Sum of all divisors σ(n): 71406720
• Sum of proper divisors (its aliquot sum) s(n): 50373180
• 21033540 is an abundant number, because the sum of its proper divisors (50373180) is greater than itself. Its abundance is 29339640

Bases of 21033540

• Binary: 1010000001111001001000100₂
• Hexadecimal: 0x140F244
• Base-36: CITL0

Squares and roots of 21033540

• 21033540 squared (21033540²) is 442409804931600
• 21033540 cubed (21033540³) is 9305444328421005864000
• The square root of 21033540 is 4586.2337489491
• The cube root of 21033540 is 276.0392193793

Scales and comparisons

• 21,033,540 seconds is equal to 34 weeks, 5 days, 10 hours, 39 minutes.
• To count from 1 to 21,033,540 would take you about three hours!

  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 21033540 cubic inches would be around 23 feet tall.

Recreational maths with 21033540

• 21033540 backwards is 04533012
• 21033540 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21033540's digits is 18
• More coming soon!