21404880

Names of 21404880

• Cardinal: 21404880 can be written as Twenty-one million, four hundred four thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.140488 × 10⁷

Factors of 21404880

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 185

Divisors of 21404880

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 31 35 36 40 42 45 48 56 60 62 63 70 72 80 84 90 93 105 112 120 124 126 137 140 144 155 168 180 186 210 217 240 248 252 274 279 280 310 315 336 360 372 411 420 434 465 496 504 548 558 560 620 630 651 685 720 744 822 840 868 930 959 1008 1085 1096 1116 1233 1240 1260 1302 1370 1395 1488 1644 1680 1736 1860 1918 1953 2055 2170 2192 2232 2466 2480 2520 2604 2740 2790 2877 3255 3288 3472 3720 3836 3906 4110 4247 4340 4464 4795 4932 5040 5208 5480 5580 5754 6165 6510 6576 7440 7672 7812 8220 8494 8631 8680 9590 9765 9864 10416 10960 11160 11508 12330 12741 13020 14385 15344 15624 16440 16988 17262 17360 19180 19530 19728 21235 22320 23016 24660 25482 26040 28770 29729 31248 32880 33976 34524 38223 38360 39060 42470 43155 46032 49320 50964 52080 57540 59458 63705 67952 69048 76446 76720 78120 84940 86310 89187 98640 101928 115080 118916 127410 138096 148645 152892 156240 169880 172620 178374 191115 203856 230160 237832 254820 267561 297290 305784 339760 345240 356748 382230 445935 475664 509640 535122 594580 611568 690480 713496 764460 891870 1019280 1070244 1189160 1337805 1426992 1528920 1783740 2140488 2378320 2675610 3057840 3567480 4280976 5351220 7134960 10702440 21404880
• Sum of all divisors σ(n): 85423104
• Sum of proper divisors (its aliquot sum) s(n): 64018224
• 21404880 is an abundant number, because the sum of its proper divisors (64018224) is greater than itself. Its abundance is 42613344

Bases of 21404880

• Binary: 1010001101001110011010000₂
• Hexadecimal: 0x1469CD0
• Base-36: CQS40

Squares and roots of 21404880

• 21404880 squared (21404880²) is 458168887814400
• 21404880 cubed (21404880³) is 9807050063400694272000
• The square root of 21404880 is 4626.5408244173
• The cube root of 21404880 is 277.6542118263

Scales and comparisons

• 21,404,880 seconds is equal to 35 weeks, 2 days, 17 hours, 48 minutes.
• To count from 1 to 21,404,880 would take you about fourteen 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 21404880 cubic inches would be around 23.1 feet tall.

Recreational maths with 21404880

• 21404880 backwards is 08840412
• The number of decimal digits it has is: 8
• The sum of 21404880's digits is 27
• More coming soon!