18688128768

Names of 18688128768

• Cardinal: 18688128768 can be written as Eighteen billion, six hundred eighty-eight million, one hundred twenty-eight thousand, seven hundred sixty-eight.

Scientific notation

• Scientific notation: 1.8688128768 × 10¹⁰

Factors of 18688128768

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 102757

Divisors of 18688128768

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 72 79 96 128 144 158 192 237 256 288 316 384 474 576 632 711 768 948 1152 1264 1422 1896 2304 2528 2844 3792 5056 5688 7584 10112 11376 15168 20224 22752 30336 45504 60672 91008 102673 182016 205346 308019 410692 616038 821384 924057 1232076 1642768 1848114 2464152 3285536 3696228 4928304 6571072 7392456 8111167 9856608 13142144 14784912 16222334 19713216 24333501 26284288 29569824 32444668 39426432 48667002 59139648 64889336 73000503 78852864 97334004 118279296 129778672 146001006 194668008 236558592 259557344 292002012 389336016 519114688 584004024 778672032 1038229376 1168008048 1557344064 2076458752 2336016096 3114688128 4672032192 6229376256 9344064384 18688128768
• Sum of all divisors σ(n): 54565070560
• Sum of proper divisors (its aliquot sum) s(n): 35876941792
• 18688128768 is an abundant number, because the sum of its proper divisors (35876941792) is greater than itself. Its abundance is 17188813024

Bases of 18688128768

• Binary: 10001011001111001100011011100000000₂
• Hexadecimal: 0x459E63700
• Base-36: 8L2FGG0

Squares and roots of 18688128768

• 18688128768 squared (18688128768²) is 349246156849349197824
• 18688128768 cubed (18688128768³) is 6526757150929762985932417400832
• The square root of 18688128768 is 136704.5308978455
• The cube root of 18688128768 is 2653.7210697953

Scales and comparisons

• 18,688,128,768 seconds is equal to 594 years, 11 weeks, 4 days, 18 hours, 52 minutes, 48 seconds.
• To count from 1 to 18,688,128,768 would take you about one thousand, one hundred eighty-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 18688128768 cubic inches would be around 221.1 feet tall.

Recreational maths with 18688128768

• 18688128768 backwards is 86782188681
• The number of decimal digits it has is: 11
• The sum of 18688128768's digits is 63
• More coming soon!