21441420

Names of 21441420

• Cardinal: 21441420 can be written as Twenty-one million, four hundred forty-one thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.144142 × 10⁷

Factors of 21441420

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 58

Divisors of 21441420

• Number of divisors d(n): 432
• Complete list of divisors:
  1 2 3 4 5 6 7 9 10 11 12 13 14 15 17 18 20 21 22 26 28 30 33 34 35 36 39 42 44 45 49 51 52 55 60 63 65 66 68 70 77 78 84 85 90 91 98 99 102 105 110 117 119 126 130 132 140 143 147 153 154 156 165 170 180 182 187 195 196 198 204 210 220 221 231 234 238 245 252 255 260 273 286 294 306 308 315 330 340 357 364 374 385 390 396 420 429 441 442 455 462 468 476 490 495 510 539 546 561 572 585 588 595 612 630 637 660 663 693 714 715 735 748 765 770 780 819 833 858 882 884 910 924 935 980 990 1001 1020 1071 1078 1092 1105 1122 1155 1170 1190 1260 1274 1287 1309 1326 1365 1386 1428 1430 1470 1530 1540 1547 1617 1638 1666 1683 1716 1764 1785 1820 1870 1911 1980 1989 2002 2142 2145 2156 2205 2210 2244 2310 2340 2380 2431 2499 2548 2574 2618 2652 2695 2730 2772 2805 2860 2940 3003 3060 3094 3185 3234 3276 3315 3332 3366 3465 3570 3740 3822 3927 3978 4004 4095 4165 4284 4290 4410 4420 4620 4641 4851 4862 4998 5005 5148 5236 5355 5390 5460 5610 5733 6006 6188 6370 6435 6468 6545 6630 6732 6930 7007 7140 7293 7497 7644 7735 7854 7956 8085 8190 8330 8415 8580 8820 9009 9163 9282 9555 9702 9724 9945 9996 10010 10710 10780 10829 11220 11466 11781 12012 12155 12495 12740 12870 13090 13260 13860 13923 14014 14586 14994 15015 15470 15708 16170 16380 16660 16830 17017 18018 18326 18564 19110 19404 19635 19890 20020 21021 21420 21658 21879 22932 23205 23562 24255 24310 24990 25740 26180 27489 27846 28028 28665 29172 29988 30030 30940 32340 32487 33660 34034 35035 36036 36465 36652 37485 38220 39270 39780 42042 43316 43758 45045 45815 46410 47124 48510 48620 49980 51051 54145 54978 55692 57330 58905 60060 63063 64974 68068 69615 70070 72930 74970 78540 82467 84084 85085 87516 90090 91630 92820 97020 97461 102102 105105 108290 109395 109956 114660 117810 119119 126126 129948 137445 139230 140140 145860 149940 153153 162435 164934 170170 180180 183260 194922 204204 210210 216580 218790 235620 238238 252252 255255 274890 278460 306306 315315 324870 329868 340340 357357 389844 412335 420420 437580 476476 487305 510510 549780 595595 612612 630630 649740 714714 765765 824670 974610 1021020 1072071 1191190 1261260 1429428 1531530 1649340 1786785 1949220 2144142 2382380 3063060 3573570 4288284 5360355 7147140 10720710 21441420
• Sum of all divisors σ(n): 94112928
• Sum of proper divisors (its aliquot sum) s(n): 72671508
• 21441420 is an abundant number, because the sum of its proper divisors (72671508) is greater than itself. Its abundance is 51230088

Bases of 21441420

• Binary: 1010001110010101110001100₂
• Hexadecimal: 0x1472B8C
• Base-36: CRKB0

Squares and roots of 21441420

• 21441420 squared (21441420²) is 459734491616400
• 21441420 cubed (21441420³) is 9857360323233711288000
• The square root of 21441420 is 4630.4880952227
• The cube root of 21441420 is 277.8121153403

Scales and comparisons

• 21,441,420 seconds is equal to 35 weeks, 3 days, 3 hours, 57 minutes.
• To count from 1 to 21,441,420 would take you about five 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 21441420 cubic inches would be around 23.2 feet tall.

Recreational maths with 21441420

• 21441420 backwards is 02414412
• 21441420 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21441420's digits is 18
• More coming soon!