21425040

Names of 21425040

• Cardinal: 21425040 can be written as Twenty-one million, four hundred twenty-five thousand and forty.

Scientific notation

• Scientific notation: 2.142504 × 10⁷

Factors of 21425040

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 139

Divisors of 21425040

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 16 18 20 21 24 26 27 28 30 35 36 39 40 42 45 48 52 54 56 60 63 65 70 72 78 80 84 90 91 104 105 108 109 112 117 120 126 130 135 140 144 156 168 180 182 189 195 208 210 216 218 234 240 252 260 270 273 280 312 315 327 336 351 360 364 378 390 420 432 436 455 468 504 520 540 545 546 560 585 624 630 654 702 720 728 756 763 780 819 840 872 910 936 945 981 1008 1040 1080 1090 1092 1170 1260 1308 1365 1404 1417 1456 1512 1526 1560 1635 1638 1680 1744 1755 1820 1872 1890 1962 2160 2180 2184 2289 2340 2457 2520 2616 2730 2808 2834 2943 3024 3052 3120 3270 3276 3510 3640 3780 3815 3924 4095 4251 4360 4368 4578 4680 4905 4914 5040 5232 5460 5616 5668 5886 6104 6540 6552 6867 7020 7085 7280 7560 7630 7848 8190 8502 8720 9156 9360 9810 9828 9919 10920 11336 11445 11772 12208 12285 12753 13080 13104 13734 14040 14170 14715 15120 15260 15696 16380 17004 18312 19620 19656 19838 20601 21255 21840 22672 22890 23544 24570 25506 26160 27468 28080 28340 29430 29757 30520 32760 34008 34335 36624 38259 39240 39312 39676 41202 42510 45780 47088 49140 49595 51012 54936 56680 58860 59514 61040 63765 65520 68016 68670 76518 78480 79352 82404 85020 89271 91560 98280 99190 102024 103005 109872 113360 117720 119028 127530 137340 148785 153036 158704 164808 170040 178542 183120 191295 196560 198380 204048 206010 235440 238056 255060 267813 274680 297570 306072 329616 340080 357084 382590 396760 412020 446355 476112 510120 535626 549360 595140 612144 714168 765180 793520 824040 892710 1020240 1071252 1190280 1339065 1428336 1530360 1648080 1785420 2142504 2380560 2678130 3060720 3570840 4285008 5356260 7141680 10712520 21425040
• Sum of all divisors σ(n): 91660800
• Sum of proper divisors (its aliquot sum) s(n): 70235760
• 21425040 is an abundant number, because the sum of its proper divisors (70235760) is greater than itself. Its abundance is 48810720

Bases of 21425040

• Binary: 1010001101110101110010000₂
• Hexadecimal: 0x146EB90
• Base-36: CR7O0

Squares and roots of 21425040

• 21425040 squared (21425040²) is 459032339001600
• 21425040 cubed (21425040³) is 9834786224402840064000
• The square root of 21425040 is 4628.7190452651
• The cube root of 21425040 is 277.7413532091

Scales and comparisons

• 21,425,040 seconds is equal to 35 weeks, 2 days, 23 hours, 24 minutes.
• To count from 1 to 21,425,040 would take you about twenty-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 21425040 cubic inches would be around 23.1 feet tall.

Recreational maths with 21425040

• 21425040 backwards is 04052412
• 21425040 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21425040's digits is 18
• More coming soon!