21045960

Names of 21045960

• Cardinal: 21045960 can be written as Twenty-one million, forty-five thousand, nine hundred sixty.

Scientific notation

• Scientific notation: 2.104596 × 10⁷

Factors of 21045960

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1522

Divisors of 21045960

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 27 30 36 39 40 45 52 54 60 65 72 78 90 104 108 117 120 130 135 156 180 195 216 234 260 270 312 351 360 390 468 520 540 585 702 780 936 1080 1170 1404 1499 1560 1755 2340 2808 2998 3510 4497 4680 5996 7020 7495 8994 11992 13491 14040 14990 17988 19487 22485 26982 29980 35976 38974 40473 44970 53964 58461 59960 67455 77948 80946 89940 97435 107928 116922 134910 155896 161892 175383 179880 194870 202365 233844 269820 292305 323784 350766 389740 404730 467688 526149 539640 584610 701532 779480 809460 876915 1052298 1169220 1403064 1618920 1753830 2104596 2338440 2630745 3507660 4209192 5261490 7015320 10522980 21045960
• Sum of all divisors σ(n): 75600000
• Sum of proper divisors (its aliquot sum) s(n): 54554040
• 21045960 is an abundant number, because the sum of its proper divisors (54554040) is greater than itself. Its abundance is 33508080

Bases of 21045960

• Binary: 1010000010010001011001000₂
• Hexadecimal: 0x14122C8
• Base-36: CJ360

Squares and roots of 21045960

• 21045960 squared (21045960²) is 442932432321600
• 21045960 cubed (21045960³) is 9321938253343100736000
• The square root of 21045960 is 4587.5876013435
• The cube root of 21045960 is 276.0935410725

Scales and comparisons

• 21,045,960 seconds is equal to 34 weeks, 5 days, 14 hours, 6 minutes.
• To count from 1 to 21,045,960 would take you about nine 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 21045960 cubic inches would be around 23 feet tall.

Recreational maths with 21045960

• 21045960 backwards is 06954012
• 21045960 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21045960's digits is 27
• More coming soon!