21680746752

Names of 21680746752

• Cardinal: 21680746752 can be written as Twenty-one billion, six hundred eighty million, seven hundred forty-six thousand, seven hundred fifty-two.

Scientific notation

• Scientific notation: 2.1680746752 × 10¹⁰

Factors of 21680746752

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 4032889

Divisors of 21680746752

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 672 768 896 1344 1792 2688 5376 4032877 8065754 12098631 16131508 24197262 28230139 32263016 48394524 56460278 64526032 84690417 96789048 112920556 129052064 169380834 193578096 225841112 258104128 338761668 387156192 451682224 516208256 677523336 774312384 903364448 1032416512 1355046672 1548624768 1806728896 2710093344 3097249536 3613457792 5420186688 7226915584 10840373376 21680746752
• Sum of all divisors σ(n): 65945621056
• Sum of proper divisors (its aliquot sum) s(n): 44264874304
• 21680746752 is an abundant number, because the sum of its proper divisors (44264874304) is greater than itself. Its abundance is 22584127552

Bases of 21680746752

• Binary: 10100001100010001011111000100000000₂
• Hexadecimal: 0x50C45F100
• Base-36: 9YK5N9C

Squares and roots of 21680746752

• 21680746752 squared (21680746752²) is 470054779724358549504
• 21680746752 cubed (21680746752³) is 10191138638770962077442279211008
• The square root of 21680746752 is 147243.8343429021
• The cube root of 21680746752 is 2788.4192924193

Scales and comparisons

• 21,680,746,752 seconds is equal to 689 years, 19 weeks, 5 days, 13 hours, 39 minutes, 12 seconds.
• To count from 1 to 21,680,746,752 would take you about one thousand, three hundred seventy-eight 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 21680746752 cubic inches would be around 232.4 feet tall.

Recreational maths with 21680746752

• 21680746752 backwards is 25764708612
• 21680746752 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21680746752's digits is 48
• More coming soon!