12991920840

Names of 12991920840

• Cardinal: 12991920840 can be written as Twelve billion, nine hundred ninety-one million, nine hundred twenty thousand, eight hundred forty.

Scientific notation

• Scientific notation: 1.299192084 × 10¹⁰

Factors of 12991920840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 12140

Divisors of 12991920840

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 36 40 45 60 72 90 120 180 360 5231 6899 10462 13798 15693 20697 20924 26155 27596 31386 34495 41394 41848 47079 52310 55192 62091 62772 68990 78465 82788 94158 103485 104620 124182 125544 137980 156930 165576 188316 206970 209240 235395 248364 275960 310455 313860 376632 413940 470790 496728 620910 627720 827880 941580 1241820 1883160 2483640 36088669 72177338 108266007 144354676 180443345 216532014 288709352 324798021 360886690 433064028 541330035 649596042 721773380 866128056 1082660070 1299192084 1443546760 1623990105 2165320140 2598384168 3247980210 4330640280 6495960420 12991920840
• Sum of all divisors σ(n): 42237936000
• Sum of proper divisors (its aliquot sum) s(n): 29246015160
• 12991920840 is an abundant number, because the sum of its proper divisors (29246015160) is greater than itself. Its abundance is 16254094320

Bases of 12991920840

• Binary: 1100000110011000001111101011001000₂
• Hexadecimal: 0x30660FAC8
• Base-36: 5YV1YA0

Squares and roots of 12991920840

• 12991920840 squared (12991920840²) is 168790007112826305600
• 12991920840 cubed (12991920840³) is 2192906410992876311024848704000
• The square root of 12991920840 is 113982.1075432455
• The cube root of 12991920840 is 2350.8474891091

Scales and comparisons

• 12,991,920,840 seconds is equal to 413 years, 5 weeks, 2 days, 10 hours, 54 minutes.
• To count from 1 to 12,991,920,840 would take you about eight hundred twenty-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 12991920840 cubic inches would be around 195.9 feet tall.

Recreational maths with 12991920840

• 12991920840 backwards is 04802919921
• 12991920840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12991920840's digits is 45
• More coming soon!