12128638464

Names of 12128638464

• Cardinal: 12128638464 can be written as Twelve billion, one hundred twenty-eight million, six hundred thirty-eight thousand, four hundred sixty-four.

Scientific notation

• Scientific notation: 1.2128638464 × 10¹⁰

Factors of 12128638464

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 877366

Divisors of 12128638464

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 64 72 96 108 128 144 192 216 256 288 384 432 512 576 768 864 1152 1536 1728 2304 3456 4608 6912 13824 877361 1754722 2632083 3509444 5264166 7018888 7896249 10528332 14037776 15792498 21056664 23688747 28075552 31584996 42113328 47377494 56151104 63169992 84226656 94754988 112302208 126339984 168453312 189509976 224604416 252679968 336906624 379019952 449208832 505359936 673813248 758039904 1010719872 1347626496 1516079808 2021439744 3032159616 4042879488 6064319232 12128638464
• Sum of all divisors σ(n): 35901653040
• Sum of proper divisors (its aliquot sum) s(n): 23773014576
• 12128638464 is an abundant number, because the sum of its proper divisors (23773014576) is greater than itself. Its abundance is 11644376112

Bases of 12128638464

• Binary: 1011010010111011000101011000000000₂
• Hexadecimal: 0x2D2EC5600
• Base-36: 5KL2TC0

Squares and roots of 12128638464

• 12128638464 squared (12128638464²) is 147103870990420279296
• 12128638464 cubed (12128638464³) is 1784169667897705174995088441344
• The square root of 12128638464 is 110130.0979024353
• The cube root of 12128638464 is 2297.5802190501

Scales and comparisons

• 12,128,638,464 seconds is equal to 385 years, 33 weeks, 6 days, 18 hours, 14 minutes, 24 seconds.
• To count from 1 to 12,128,638,464 would take you about seven hundred seventy-one 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 12128638464 cubic inches would be around 191.5 feet tall.

Recreational maths with 12128638464

• 12128638464 backwards is 46483682121
• The number of decimal digits it has is: 11
• The sum of 12128638464's digits is 45
• More coming soon!