21008064

Names of 21008064

• Cardinal: 21008064 can be written as Twenty-one million, eight thousand and sixty-four.

Scientific notation

• Scientific notation: 2.1008064 × 10⁷

Factors of 21008064

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 52

Divisors of 21008064

• Number of divisors d(n): 224
• Complete list of divisors:
  1 2 3 4 6 7 8 11 12 14 16 21 22 24 28 29 32 33 42 44 48 49 56 58 64 66 77 84 87 88 96 98 112 116 132 147 154 168 174 176 192 196 203 224 231 232 264 294 308 319 336 343 348 352 392 406 448 462 464 528 539 588 609 616 638 672 686 696 704 784 812 924 928 957 1029 1056 1078 1176 1218 1232 1276 1344 1372 1392 1421 1568 1617 1624 1848 1856 1914 2058 2112 2156 2233 2352 2436 2464 2552 2744 2784 2842 3136 3234 3248 3696 3773 3828 4116 4263 4312 4466 4704 4872 4928 5104 5488 5568 5684 6468 6496 6699 7392 7546 7656 8232 8526 8624 8932 9408 9744 9947 10208 10976 11319 11368 12936 12992 13398 14784 15092 15312 15631 16464 17052 17248 17864 19488 19894 20416 21952 22638 22736 25872 26796 29841 30184 30624 31262 32928 34104 34496 35728 38976 39788 45276 45472 46893 51744 53592 59682 60368 61248 62524 65856 68208 71456 79576 90552 90944 93786 103488 107184 109417 119364 120736 125048 136416 142912 159152 181104 187572 214368 218834 238728 241472 250096 272832 318304 328251 362208 375144 428736 437668 477456 500192 636608 656502 724416 750288 875336 954912 1000384 1313004 1500576 1750672 1909824 2626008 3001152 3501344 5252016 7002688 10504032 21008064
• Sum of all divisors σ(n): 73152000
• Sum of proper divisors (its aliquot sum) s(n): 52143936
• 21008064 is an abundant number, because the sum of its proper divisors (52143936) is greater than itself. Its abundance is 31135872

Bases of 21008064

• Binary: 1010000001000111011000000₂
• Hexadecimal: 0x1408EC0
• Base-36: CI9XC

Squares and roots of 21008064

• 21008064 squared (21008064²) is 441338753028096
• 21008064 cubed (21008064³) is 9271672769294434566144
• The square root of 21008064 is 4583.4554650395
• The cube root of 21008064 is 275.9277273483

Scales and comparisons

• 21,008,064 seconds is equal to 34 weeks, 5 days, 3 hours, 34 minutes, 24 seconds.
• To count from 1 to 21,008,064 would take you about seventeen 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 21008064 cubic inches would be around 23 feet tall.

Recreational maths with 21008064

• 21008064 backwards is 46080012
• 21008064 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21008064's digits is 21
• More coming soon!