20981268

Names of 20981268

• Cardinal: 20981268 can be written as Twenty million, nine hundred eighty-one thousand, two hundred sixty-eight.

Scientific notation

• Scientific notation: 2.0981268 × 10⁷

Factors of 20981268

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 52

Divisors of 20981268

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 7 9 11 12 14 18 21 22 27 28 29 33 36 42 44 54 58 63 66 77 81 84 87 99 108 116 126 132 154 162 174 189 198 203 231 252 261 297 308 319 324 348 378 396 406 462 522 567 594 609 638 693 756 783 812 841 891 924 957 1044 1134 1188 1218 1276 1386 1566 1682 1782 1827 1914 2079 2233 2268 2349 2436 2523 2772 2871 3132 3364 3564 3654 3828 4158 4466 4698 5046 5481 5742 5887 6237 6699 7308 7569 8316 8613 8932 9251 9396 10092 10962 11484 11774 12474 13398 15138 16443 17226 17661 18502 20097 21924 22707 23548 24948 25839 26796 27753 30276 32886 34452 35322 37004 40194 45414 51678 52983 55506 60291 64757 65772 68121 70644 80388 83259 90828 103356 105966 111012 120582 129514 136242 158949 166518 180873 194271 211932 241164 249777 259028 272484 317898 333036 361746 388542 476847 499554 582813 635796 723492 749331 777084 953694 999108 1165626 1498662 1748439 1907388 2331252 2997324 3496878 5245317 6993756 10490634 20981268
• Sum of all divisors σ(n): 70822752
• Sum of proper divisors (its aliquot sum) s(n): 49841484
• 20981268 is an abundant number, because the sum of its proper divisors (49841484) is greater than itself. Its abundance is 28860216

Bases of 20981268

• Binary: 1010000000010011000010100₂
• Hexadecimal: 0x1402614
• Base-36: CHP90

Squares and roots of 20981268

• 20981268 squared (20981268²) is 440213606887824
• 20981268 cubed (20981268³) is 9236239663360081280832
• The square root of 20981268 is 4580.5314102187
• The cube root of 20981268 is 275.8103612229

Scales and comparisons

• 20,981,268 seconds is equal to 34 weeks, 4 days, 20 hours, 7 minutes, 48 seconds.
• To count from 1 to 20,981,268 would take you about six hours!

  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 20981268 cubic inches would be around 23 feet tall.

Recreational maths with 20981268

• 20981268 backwards is 86218902
• 20981268 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 20981268's digits is 36
• More coming soon!