21284039840

Names of 21284039840

• Cardinal: 21284039840 can be written as Twenty-one billion, two hundred eighty-four million, thirty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.128403984 × 10¹⁰

Factors of 21284039840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 597

Divisors of 21284039840

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 49 56 70 74 80 98 112 140 148 160 185 196 224 239 245 259 280 296 307 370 392 478 490 518 560 592 614 740 784 956 980 1036 1120 1184 1195 1228 1295 1480 1535 1568 1673 1813 1912 1960 2072 2149 2390 2456 2590 2960 3070 3346 3626 3824 3920 4144 4298 4780 4912 5180 5920 6140 6692 7252 7648 7840 8288 8365 8596 8843 9065 9560 9824 10360 10745 11359 11711 12280 13384 14504 15043 16730 17192 17686 18130 19120 20720 21490 22718 23422 24560 26768 29008 30086 33460 34384 35372 36260 38240 41440 42980 44215 45436 46844 49120 53536 56795 58016 58555 60172 61901 66920 68768 70744 72520 73373 75215 79513 85960 88430 90872 93688 113590 117110 120344 123802 133840 141488 145040 146746 150430 159026 171920 176860 181744 187376 227180 234220 240688 247604 267680 282976 290080 293492 300860 309505 318052 343840 353720 363488 366865 374752 397565 433307 454360 468440 481376 495208 513611 556591 586984 601720 619010 636104 707440 733730 795130 866614 908720 936880 990416 1027222 1113182 1173968 1203440 1238020 1272208 1414880 1467460 1590260 1733228 1817440 1873760 1980832 2054444 2166535 2226364 2347936 2406880 2476040 2544416 2568055 2714801 2782955 2934920 3180520 3466456 3595277 4108888 4333070 4452728 4952080 5136110 5429602 5565910 5869840 6361040 6932912 7190554 8217776 8666140 8905456 9904160 10272220 10859204 11131820 11739680 12722080 13574005 13865824 14381108 16435552 17332280 17810912 17976385 19003607 20544440 21718408 22263640 27148010 28762216 34664560 35952770 38007214 41088880 43436816 44527280 54296020 57524432 69329120 71905540 76014428 82177760 86873632 89054560 95018035 108592040 115048864 133025249 143811080 152028856 190036070 217184080 266050498 287622160 304057712 380072140 434368160 532100996 575244320 608115424 665126245 760144280 1064201992 1330252490 1520288560 2128403984 2660504980 3040577120 4256807968 5321009960 10642019920 21284039840
• Sum of all divisors σ(n): 60521852160
• Sum of proper divisors (its aliquot sum) s(n): 39237812320
• 21284039840 is an abundant number, because the sum of its proper divisors (39237812320) is greater than itself. Its abundance is 17953772480

Bases of 21284039840

• Binary: 10011110100101000001010110010100000₂
• Hexadecimal: 0x4F4A0ACA0
• Base-36: 9RZYU8W

Squares and roots of 21284039840

• 21284039840 squared (21284039840²) is 453010351910707225600
• 21284039840 cubed (21284039840³) is 9641890377999912712246267904000
• The square root of 21284039840 is 145890.5063395147
• The cube root of 21284039840 is 2771.3073125513

Scales and comparisons

• 21,284,039,840 seconds is equal to 676 years, 39 weeks, 6 days, 1 hour, 17 minutes, 20 seconds.
• To count from 1 to 21,284,039,840 would take you about one thousand, three hundred fifty-three years!

  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 21284039840 cubic inches would be around 230.9 feet tall.

Recreational maths with 21284039840

• 21284039840 backwards is 04893048212
• The number of decimal digits it has is: 11
• The sum of 21284039840's digits is 41
• More coming soon!