21397087152

Names of 21397087152

• Cardinal: 21397087152 can be written as Twenty-one billion, three hundred ninety-seven million, eighty-seven thousand, one hundred fifty-two.

Scientific notation

• Scientific notation: 2.1397087152 × 10¹⁰

Factors of 21397087152

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 3032479

Divisors of 21397087152

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 49 56 63 72 84 98 112 126 144 147 168 196 252 294 336 392 441 504 588 784 882 1008 1176 1764 2352 3528 7056 3032467 6064934 9097401 12129868 18194802 21227269 24259736 27292203 36389604 42454538 48519472 54584406 63681807 72779208 84909076 109168812 127363614 145558416 148590883 169818152 191045421 218337624 254727228 297181766 339636304 382090842 436675248 445772649 509454456 594363532 764181684 891545298 1018908912 1188727064 1337317947 1528363368 1783090596 2377454128 2674635894 3056726736 3566181192 5349271788 7132362384 10698543576 21397087152
• Sum of all divisors σ(n): 69658822428
• Sum of proper divisors (its aliquot sum) s(n): 48261735276
• 21397087152 is an abundant number, because the sum of its proper divisors (48261735276) is greater than itself. Its abundance is 26864648124

Bases of 21397087152

• Binary: 10011111011010111011010001110110000₂
• Hexadecimal: 0x4FB5DA3B0
• Base-36: 9TV9U40

Squares and roots of 21397087152

• 21397087152 squared (21397087152²) is 457835338590283471104
• 21397087152 cubed (21397087152³) is 9796342641081724251597361655808
• The square root of 21397087152 is 146277.4321349675
• The cube root of 21397087152 is 2776.2051266227

Scales and comparisons

• 21,397,087,152 seconds is equal to 680 years, 18 weeks, 5 days, 11 hours, 19 minutes, 12 seconds.
• To count from 1 to 21,397,087,152 would take you about one thousand, three hundred sixty 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 21397087152 cubic inches would be around 231.4 feet tall.

Recreational maths with 21397087152

• 21397087152 backwards is 25178079312
• The number of decimal digits it has is: 11
• The sum of 21397087152's digits is 45
• More coming soon!