21428527806

Names of 21428527806

• Cardinal: 21428527806 can be written as Twenty-one billion, four hundred twenty-eight million, five hundred twenty-seven thousand, eight hundred six.

Scientific notation

• Scientific notation: 2.1428527806 × 10¹⁰

Factors of 21428527806

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 35

Divisors of 21428527806

• Number of divisors d(n): 264
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 23 27 42 46 49 54 63 69 81 98 126 138 147 161 162 189 207 243 294 322 343 378 414 441 483 486 529 567 621 686 729 882 966 1029 1058 1127 1134 1242 1323 1449 1458 1587 1701 1863 2058 2187 2254 2646 2898 3087 3174 3381 3402 3703 3726 3969 4347 4374 4761 5103 5589 6174 6561 6762 7406 7889 7938 8694 9261 9522 10143 10206 11109 11178 11907 13041 13122 14283 15309 15778 16767 18522 19683 20286 22218 23667 23814 25921 26082 27783 28566 30429 30618 33327 33534 35721 39123 39366 42849 45927 47334 50301 51842 55566 59049 60858 66654 71001 71442 77763 78246 83349 85698 91287 91854 99981 100602 107163 117369 118098 128547 137781 142002 150903 155526 166698 181447 182574 199962 213003 214326 233289 234738 250047 257094 273861 275562 299943 301806 321489 352107 362894 385641 413343 426006 452709 466578 500094 544341 547722 599886 639009 642978 699867 704214 750141 771282 821583 826686 899829 905418 964467 1056321 1088682 1156923 1278018 1358127 1399734 1500282 1633023 1643166 1799658 1917027 1928934 2099601 2112642 2250423 2313846 2464749 2699487 2716254 2893401 3168963 3266046 3470769 3834054 4199202 4500846 4899069 4929498 5398974 5751081 5786802 6298803 6337926 6751269 6941538 7394247 8098461 9506889 9798138 10412307 11502162 12597606 13502538 14697207 14788494 16196922 17253243 18896409 19013778 20253807 20824614 22182741 24295383 29394414 31236921 34506486 37792818 40507614 44091621 44365482 48590766 51759729 56689227 62473842 66548223 72886149 88183242 103519458 113378454 132274863 133096446 145772298 155279187 170067681 218658447 264549726 310558374 340135362 396824589 437316894 465837561 510203043 793649178 931675122 1020406086 1190473767 1530609129 2380947534 3061218258 3571421301 7142842602 10714263903 21428527806
• Sum of all divisors σ(n): 58777042800
• Sum of proper divisors (its aliquot sum) s(n): 37348514994
• 21428527806 is an abundant number, because the sum of its proper divisors (37348514994) is greater than itself. Its abundance is 15919987188

Bases of 21428527806

• Binary: 10011111101001111010110001010111110₂
• Hexadecimal: 0x4FD3D62BE
• Base-36: 9UDZPVI

Squares and roots of 21428527806

• 21428527806 squared (21428527806²) is 459181803932515173636
• 21428527806 cubed (21428527806³) is 9839590053577141545775944122616
• The square root of 21428527806 is 146384.8619427569
• The cube root of 21428527806 is 2777.5642366555

Scales and comparisons

• 21,428,527,806 seconds is equal to 681 years, 18 weeks, 5 days, 8 hours, 50 minutes, 6 seconds.
• To count from 1 to 21,428,527,806 would take you about one thousand, three hundred sixty-two 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 21428527806 cubic inches would be around 231.5 feet tall.

Recreational maths with 21428527806

• 21428527806 backwards is 60872582412
• The number of decimal digits it has is: 11
• The sum of 21428527806's digits is 45
• More coming soon!