21942984

Names of 21942984

• Cardinal: 21942984 can be written as Twenty-one million, nine hundred forty-two thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 2.1942984 × 10⁷

Factors of 21942984

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 456

Divisors of 21942984

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 21 24 28 42 47 49 56 84 94 98 141 147 168 188 196 282 294 329 376 392 397 564 588 658 794 987 1128 1176 1191 1316 1588 1974 2303 2382 2632 2779 3176 3948 4606 4764 5558 6909 7896 8337 9212 9528 11116 13818 16674 18424 18659 19453 22232 27636 33348 37318 38906 55272 55977 58359 66696 74636 77812 111954 116718 130613 149272 155624 223908 233436 261226 391839 447816 466872 522452 783678 914291 1044904 1567356 1828582 2742873 3134712 3657164 5485746 7314328 10971492 21942984
• Sum of all divisors σ(n): 65335680
• Sum of proper divisors (its aliquot sum) s(n): 43392696
• 21942984 is an abundant number, because the sum of its proper divisors (43392696) is greater than itself. Its abundance is 21449712

Bases of 21942984

• Binary: 1010011101101001011001000₂
• Hexadecimal: 0x14ED2C8
• Base-36: D2BBC

Squares and roots of 21942984

• 21942984 squared (21942984²) is 481494546824256
• 21942984 cubed (21942984³) is 10565427137051900219904
• The square root of 21942984 is 4684.3338907469
• The cube root of 21942984 is 279.9616614175

Scales and comparisons

• 21,942,984 seconds is equal to 36 weeks, 1 day, 23 hours, 16 minutes, 24 seconds.
• To count from 1 to 21,942,984 would take you about two weeks!

  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 21942984 cubic inches would be around 23.3 feet tall.

Recreational maths with 21942984

• 21942984 backwards is 48924912
• The number of decimal digits it has is: 8
• The sum of 21942984's digits is 39
• More coming soon!