21428189649880

Names of 21428189649880

• Cardinal: 21428189649880 can be written as Twenty-one trillion, four hundred twenty-eight billion, one hundred eighty-nine million, six hundred forty-nine thousand, eight hundred eighty.

Scientific notation

• Scientific notation: 2.142818964988 × 10¹³

Factors of 21428189649880

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 181897

Divisors of 21428189649880

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 4 5 8 10 13 20 23 26 40 46 52 65 92 104 115 130 184 230 260 299 460 520 598 920 1196 1495 2392 2990 5980 10453 11960 20906 41812 52265 83624 104530 135889 171401 209060 240419 271778 342802 418120 480838 543556 679445 685604 857005 961676 1087112 1202095 1358890 1371208 1714010 1923352 2228213 2404190 2717780 3125447 3428020 3942223 4456426 4808380 5435560 6250894 6856040 7884446 8912852 9616760 11141065 12501788 15627235 15768892 17825704 19711115 22282130 25003576 31254470 31537784 39422230 44564260 51248899 62508940 78844460 89128520 102497798 125017880 157688920 204995596 256244495 409991192 512488990 1024977980 1791654653 2049955960 3583309306 7166618612 8958273265 14333237224 17916546530 23291510489 35833093060 41208057019 46583020978 71666186120 82416114038 93166041956 116457552445 164832228076 186332083912 206040285095 232915104890 329664456152 412080570190 465830209780 535704741247 824161140380 931660419560 1071409482494 1648322280760 2142818964988 2678523706235 4285637929976 5357047412470 10714094824940 21428189649880
• Sum of all divisors σ(n): 54185136001920
• Sum of proper divisors (its aliquot sum) s(n): 32756946352040
• 21428189649880 is an abundant number, because the sum of its proper divisors (32756946352040) is greater than itself. Its abundance is 11328756702160

Bases of 21428189649880

• Binary: 100110111110100100011101000011101101111011000₂
• Hexadecimal: 0x137D23A1DBD8
• Base-36: 7LFZ2UW2G

Squares and roots of 21428189649880

• 21428189649880 squared (21428189649880²) is 459167311671224356984014400
• 21428189649880 cubed (21428189649880³) is 9839124235516553891752215658692878272000
• The square root of 21428189649880 is 4629059.2618673613
• The cube root of 21428189649880 is 27775.4962598801

Scales and comparisons

• 21,428,189,649,880 seconds is equal to 681,350 years, 7 weeks, 5 days, 6 hours, 44 minutes, 40 seconds.
• To count from 1 to 21,428,189,649,880 would take you about one million, seven hundred three thousand, three hundred seventy-five 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 21428189649880 cubic inches would be around 2314.6 feet tall.

Recreational maths with 21428189649880

• 21428189649880 backwards is 08894698182412
• The number of decimal digits it has is: 14
• The sum of 21428189649880's digits is 70
• More coming soon!