21821043840

Names of 21821043840

• Cardinal: 21821043840 can be written as Twenty-one billion, eight hundred twenty-one million, forty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.182104384 × 10¹⁰

Factors of 21821043840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 2099

Divisors of 21821043840

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 31 32 40 48 60 62 64 80 93 96 120 124 128 155 160 186 192 197 240 248 310 320 372 384 394 465 480 496 591 620 640 744 788 930 960 985 992 1182 1240 1488 1576 1860 1861 1920 1970 1984 2364 2480 2955 2976 3152 3720 3722 3940 3968 4728 4960 5583 5910 5952 6107 6304 7440 7444 7880 9305 9456 9920 11166 11820 11904 12214 12608 14880 14888 15760 18321 18610 18912 19840 22332 23640 24428 25216 27915 29760 29776 30535 31520 36642 37220 37824 44664 47280 48856 55830 57691 59520 59552 61070 63040 73284 74440 75648 89328 91605 94560 97712 111660 115382 119104 122140 126080 146568 148880 173073 178656 183210 189120 195424 223320 230764 238208 244280 288455 293136 297760 346146 357312 366420 366617 378240 390848 446640 461528 488560 576910 586272 595520 692292 714624 732840 733234 781696 865365 893280 923056 977120 1099851 1153820 1172544 1191040 1384584 1465680 1466468 1730730 1786560 1833085 1846112 1954240 2199702 2307640 2345088 2769168 2931360 2932936 3461460 3573120 3666170 3692224 3908480 4399404 4615280 5499255 5538336 5862720 5865872 6922920 7332340 7384448 8798808 9230560 10998510 11076672 11365127 11725440 11731744 13845840 14664680 17597616 18461120 21997020 22153344 22730254 23463488 27691680 29329360 34095381 35195232 36922240 43994040 45460508 46926976 55383360 56825635 58658720 68190762 70390464 87988080 90921016 110766720 113651270 117317440 136381524 140780928 170476905 175976160 181842032 227302540 234634880 272763048 340953810 351952320 363684064 454605080 545526096 681907620 703904640 727368128 909210160 1091052192 1363815240 1454736256 1818420320 2182104384 2727630480 3636840640 4364208768 5455260960 7273681280 10910521920 21821043840
• Sum of all divisors σ(n): 72201507840
• Sum of proper divisors (its aliquot sum) s(n): 50380464000
• 21821043840 is an abundant number, because the sum of its proper divisors (50380464000) is greater than itself. Its abundance is 28559420160

Bases of 21821043840

• Binary: 10100010100101000101011010010000000₂
• Hexadecimal: 0x514A2B480
• Base-36: A0VOP6O

Squares and roots of 21821043840

• 21821043840 squared (21821043840²) is 476157954267201945600
• 21821043840 cubed (21821043840³) is 10390263594829328729070895104000
• The square root of 21821043840 is 147719.4768471647
• The cube root of 21821043840 is 2794.4210273889

Scales and comparisons

• 21,821,043,840 seconds is equal to 693 years, 43 weeks, 5 days, 9 hours, 4 minutes.
• To count from 1 to 21,821,043,840 would take you about one thousand, three hundred eighty-seven 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 21821043840 cubic inches would be around 232.9 feet tall.

Recreational maths with 21821043840

• 21821043840 backwards is 04834012812
• The number of decimal digits it has is: 11
• The sum of 21821043840's digits is 33
• More coming soon!