21249285840

Names of 21249285840

• Cardinal: 21249285840 can be written as Twenty-one billion, two hundred forty-nine million, two hundred eighty-five thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.124928584 × 10¹⁰

Factors of 21249285840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 3385

Divisors of 21249285840

• Number of divisors d(n): 240
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 67 72 80 90 120 134 139 144 180 201 240 268 278 335 360 402 417 536 556 603 670 695 720 804 834 1005 1072 1112 1206 1251 1340 1390 1608 1668 2010 2085 2224 2412 2502 2680 2780 3015 3169 3216 3336 4020 4170 4824 5004 5360 5560 6030 6255 6338 6672 8040 8340 9313 9507 9648 10008 11120 12060 12510 12676 15845 16080 16680 18626 19014 20016 24120 25020 25352 27939 28521 31690 33360 37252 38028 46565 47535 48240 50040 50704 55878 57042 63380 74504 76056 83817 93130 95070 100080 111756 114084 126760 139695 142605 149008 152112 167634 186260 190140 212323 223512 228168 253520 279390 285210 335268 372520 380280 419085 424646 440491 447024 456336 558780 570420 636969 670536 745040 760560 838170 849292 880982 1061615 1117560 1140840 1273938 1321473 1341072 1676340 1698584 1761964 1910907 2123230 2202455 2235120 2281680 2547876 2642946 3184845 3352680 3397168 3523928 3821814 3964419 4246460 4404910 5095752 5285892 6369690 6607365 6705360 7047856 7643628 7928838 8492920 8809820 9554535 10191504 10571784 12739380 13214730 15287256 15857676 16985840 17619640 19109070 19822095 21143568 25478760 26429460 29512897 30574512 31715352 35239280 38218140 39644190 50957520 52858920 59025794 63430704 76436280 79288380 88538691 105717840 118051588 147564485 152872560 158576760 177077382 236103176 265616073 295128970 317153520 354154764 442693455 472206352 531232146 590257940 708309528 885386910 1062464292 1180515880 1328080365 1416619056 1770773820 2124928584 2361031760 2656160730 3541547640 4249857168 5312321460 7083095280 10624642920 21249285840
• Sum of all divisors σ(n): 72971371200
• Sum of proper divisors (its aliquot sum) s(n): 51722085360
• 21249285840 is an abundant number, because the sum of its proper divisors (51722085360) is greater than itself. Its abundance is 30472799520

Bases of 21249285840

• Binary: 10011110010100011100101111011010000₂
• Hexadecimal: 0x4F28E5ED0
• Base-36: 9RF9XW0

Squares and roots of 21249285840

• 21249285840 squared (21249285840²) is 451532148710024505600
• 21249285840 cubed (21249285840³) is 9594735693888697992899080704000
• The square root of 21249285840 is 145771.3478019601
• The cube root of 21249285840 is 2769.7980989917

Scales and comparisons

• 21,249,285,840 seconds is equal to 675 years, 34 weeks, 2 days, 19 hours, 24 minutes.
• To count from 1 to 21,249,285,840 would take you about one thousand, three hundred fifty-one 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 21249285840 cubic inches would be around 230.8 feet tall.

Recreational maths with 21249285840

• 21249285840 backwards is 04858294212
• 21249285840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21249285840's digits is 45
• More coming soon!