12638128640

Names of 12638128640

• Cardinal: 12638128640 can be written as Twelve billion, six hundred thirty-eight million, one hundred twenty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.263812864 × 10¹⁰

Factors of 12638128640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 395

Divisors of 12638128640

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 41 64 80 82 128 160 164 205 256 320 328 347 410 512 640 656 694 820 1280 1312 1388 1640 1735 2560 2624 2776 3280 3470 5248 5552 6560 6940 10496 11104 13120 13880 14227 20992 22208 26240 27760 28454 44416 52480 55520 56908 71135 88832 104960 111040 113816 120409 142270 177664 222080 227632 240818 284540 444160 455264 481636 569080 602045 888320 910528 963272 1138160 1204090 1821056 1926544 2276320 2408180 3642112 3853088 4552640 4816360 4936769 7284224 7706176 9105280 9632720 9873538 15412352 18210560 19265440 19747076 24683845 30824704 36421120 38530880 39494152 49367690 61649408 77061760 78988304 98735380 154123520 157976608 197470760 308247040 315953216 394941520 631906432 789883040 1263812864 1579766080 2527625728 3159532160 6319064320 12638128640
• Sum of all divisors σ(n): 31130671572
• Sum of proper divisors (its aliquot sum) s(n): 18492542932
• 12638128640 is an abundant number, because the sum of its proper divisors (18492542932) is greater than itself. Its abundance is 5854414292

Bases of 12638128640

• Binary: 1011110001010010101000101000000000₂
• Hexadecimal: 0x2F14A8A00
• Base-36: 5T0EYGW

Squares and roots of 12638128640

• 12638128640 squared (12638128640²) is 159722295521188249600
• 12638128640 cubed (12638128640³) is 2018590917472872944101228544000
• The square root of 12638128640 is 112419.4317722699
• The cube root of 12638128640 is 2329.3116056573

Scales and comparisons

• 12,638,128,640 seconds is equal to 401 years, 44 weeks, 2 days, 15 hours, 17 minutes, 20 seconds.
• To count from 1 to 12,638,128,640 would take you about eight hundred three 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 12638128640 cubic inches would be around 194.1 feet tall.

Recreational maths with 12638128640

• 12638128640 backwards is 04682183621
• 12638128640 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 12638128640's digits is 41
• More coming soon!