21043620

Names of 21043620

• Cardinal: 21043620 can be written as Twenty-one million, forty-three thousand, six hundred twenty.

Scientific notation

• Scientific notation: 2.104362 × 10⁷

Factors of 21043620

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 63

Divisors of 21043620

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 17 18 20 23 26 30 34 36 39 45 46 51 52 60 65 68 69 78 85 90 92 102 115 117 130 138 153 156 170 180 195 204 207 221 230 234 255 260 276 299 306 340 345 390 391 414 442 460 468 510 529 585 598 612 663 690 765 780 782 828 884 897 1020 1035 1058 1105 1170 1173 1196 1326 1380 1495 1530 1564 1587 1794 1955 1989 2070 2116 2210 2340 2346 2645 2652 2691 2990 3060 3174 3315 3519 3588 3910 3978 4140 4420 4485 4692 4761 5083 5290 5382 5865 5980 6348 6630 6877 7038 7820 7935 7956 8970 8993 9522 9945 10166 10580 10764 11730 13260 13455 13754 14076 15249 15870 17595 17940 17986 19044 19890 20332 20631 23460 23805 25415 26910 26979 27508 30498 31740 34385 35190 35972 39780 41262 44965 45747 47610 50830 53820 53958 60996 61893 68770 70380 76245 80937 82524 89930 91494 95220 101660 103155 107916 116909 123786 134895 137540 152490 161874 179860 182988 206310 228735 233818 247572 269790 304980 309465 323748 350727 404685 412620 457470 467636 539580 584545 618930 701454 809370 914940 1052181 1169090 1237860 1402908 1618740 1753635 2104362 2338180 3507270 4208724 5260905 7014540 10521810 21043620
• Sum of all divisors σ(n): 76088376
• Sum of proper divisors (its aliquot sum) s(n): 55044756
• 21043620 is an abundant number, because the sum of its proper divisors (55044756) is greater than itself. Its abundance is 34001136

Bases of 21043620

• Binary: 1010000010001100110100100₂
• Hexadecimal: 0x14119A4
• Base-36: CJ1D0

Squares and roots of 21043620

• 21043620 squared (21043620²) is 442833942704400
• 21043620 cubed (21043620³) is 9318829213373165928000
• The square root of 21043620 is 4587.3325582519
• The cube root of 21043620 is 276.0833081849

Scales and comparisons

• 21,043,620 seconds is equal to 34 weeks, 5 days, 13 hours, 27 minutes.
• To count from 1 to 21,043,620 would take you about eight 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 21043620 cubic inches would be around 23 feet tall.

Recreational maths with 21043620

• 21043620 backwards is 02634012
• 21043620 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21043620's digits is 18
• More coming soon!