21426984

Names of 21426984

• Cardinal: 21426984 can be written as Twenty-one million, four hundred twenty-six thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1426984 × 10⁷

Factors of 21426984

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 274

Divisors of 21426984

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 19 23 24 27 36 38 46 54 57 69 72 76 92 108 114 138 152 171 184 207 216 227 228 276 342 414 437 454 456 513 552 621 681 684 828 874 908 1026 1242 1311 1362 1368 1656 1748 1816 2043 2052 2484 2622 2724 3496 3933 4086 4104 4313 4968 5221 5244 5448 6129 7866 8172 8626 10442 10488 11799 12258 12939 15663 15732 16344 17252 20884 23598 24516 25878 31326 31464 34504 38817 41768 46989 47196 49032 51756 62652 77634 93978 94392 99199 103512 116451 125304 140967 155268 187956 198398 232902 281934 297597 310536 375912 396796 465804 563868 595194 793592 892791 931608 1127736 1190388 1785582 2380776 2678373 3571164 5356746 7142328 10713492 21426984
• Sum of all divisors σ(n): 65664000
• Sum of proper divisors (its aliquot sum) s(n): 44237016
• 21426984 is an abundant number, because the sum of its proper divisors (44237016) is greater than itself. Its abundance is 22810032

Bases of 21426984

• Binary: 1010001101111001100101000₂
• Hexadecimal: 0x146F328
• Base-36: CR960

Squares and roots of 21426984

• 21426984 squared (21426984²) is 459115643336256
• 21426984 cubed (21426984³) is 9837463543915663931904
• The square root of 21426984 is 4628.9290338045
• The cube root of 21426984 is 277.7497532379

Scales and comparisons

• 21,426,984 seconds is equal to 35 weeks, 2 days, 23 hours, 56 minutes, 24 seconds.
• To count from 1 to 21,426,984 would take you about twenty-three 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 21426984 cubic inches would be around 23.1 feet tall.

Recreational maths with 21426984

• 21426984 backwards is 48962412
• 21426984 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21426984's digits is 36
• More coming soon!