21171876768

Names of 21171876768

• Cardinal: 21171876768 can be written as Twenty-one billion, one hundred seventy-one million, eight hundred seventy-six thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1171876768 × 10¹⁰

Factors of 21171876768

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1883

Divisors of 21171876768

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 32 36 42 48 54 56 63 72 84 96 108 112 126 144 168 189 216 224 252 288 336 378 432 504 672 756 864 1008 1512 1871 2016 3024 3742 5613 6048 7484 11226 13097 14968 16839 22452 26194 29936 33678 39291 44904 50517 52388 59872 67356 78582 89808 101034 104776 117873 134712 157164 179616 202068 209552 235746 269424 314328 353619 404136 419104 471492 538848 628656 707238 808272 942984 1257312 1414476 1616544 1885968 2828952 3500641 3771936 5657904 7001282 10501923 11315808 14002564 21003846 24504487 28005128 31505769 42007692 49008974 56010256 63011538 73513461 84015384 94517307 98017948 112020512 126023076 147026922 168030768 189034614 196035896 220540383 252046152 294053844 336061536 378069228 392071792 441080766 504092304 588107688 661621149 756138456 784143584 882161532 1008184608 1176215376 1323242298 1512276912 1764323064 2352430752 2646484596 3024553824 3528646128 5292969192 7057292256 10585938384 21171876768
• Sum of all divisors σ(n): 70610662080
• Sum of proper divisors (its aliquot sum) s(n): 49438785312
• 21171876768 is an abundant number, because the sum of its proper divisors (49438785312) is greater than itself. Its abundance is 28266908544

Bases of 21171876768

• Binary: 10011101101111100010011001110100000₂
• Hexadecimal: 0x4EDF133A0
• Base-36: 9Q56SO0

Squares and roots of 21171876768

• 21171876768 squared (21171876768²) is 448248365879378125824
• 21171876768 cubed (21171876768³) is 9490259163855569632420526456832
• The square root of 21171876768 is 145505.5901606535
• The cube root of 21171876768 is 2766.4306386219

Scales and comparisons

• 21,171,876,768 seconds is equal to 673 years, 10 weeks, 2 days, 20 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,171,876,768 would take you about one thousand, three hundred forty-six 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 21171876768 cubic inches would be around 230.5 feet tall.

Recreational maths with 21171876768

• 21171876768 backwards is 86767817112
• 21171876768 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21171876768's digits is 54
• More coming soon!