21521977632

Names of 21521977632

• Cardinal: 21521977632 can be written as Twenty-one billion, five hundred twenty-one million, nine hundred seventy-seven thousand, six hundred thirty-two.

Scientific notation

• Scientific notation: 2.1521977632 × 10¹⁰

Factors of 21521977632

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 74729094

Divisors of 21521977632

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 74729089 149458178 224187267 298916356 448374534 597832712 672561801 896749068 1195665424 1345123602 1793498136 2391330848 2690247204 3586996272 5380494408 7173992544 10760988816 21521977632
• Sum of all divisors σ(n): 61203124710
• Sum of proper divisors (its aliquot sum) s(n): 39681147078
• 21521977632 is an abundant number, because the sum of its proper divisors (39681147078) is greater than itself. Its abundance is 18159169446

Bases of 21521977632

• Binary: 10100000010110011110101000100100000₂
• Hexadecimal: 0x502CF5120
• Base-36: 9VXMO80

Squares and roots of 21521977632

• 21521977632 squared (21521977632²) is 463195521192308327424
• 21521977632 cubed (21521977632³) is 9968883646343441793266660179968
• The square root of 21521977632 is 146703.7069470299
• The cube root of 21521977632 is 2781.5960346785

Scales and comparisons

• 21,521,977,632 seconds is equal to 684 years, 17 weeks, 1 day, 23 hours, 7 minutes, 12 seconds.
• To count from 1 to 21,521,977,632 would take you about one thousand, three hundred sixty-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 21521977632 cubic inches would be around 231.8 feet tall.

Recreational maths with 21521977632

• 21521977632 backwards is 23677912512
• The number of decimal digits it has is: 11
• The sum of 21521977632's digits is 45
• More coming soon!