129688728064

Names of 129688728064

• Cardinal: 129688728064 can be written as One hundred twenty-nine billion, six hundred eighty-eight million, seven hundred twenty-eight thousand and sixty-four.

Scientific notation

• Scientific notation: 1.29688728064 × 10¹¹

Factors of 129688728064

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 2162

Divisors of 129688728064

• Number of divisors d(n): 140
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 196 224 256 343 392 448 512 686 784 896 1372 1568 1792 2153 2401 2744 3136 3584 4306 4802 5488 6272 8612 9604 10976 12544 15071 16807 17224 19208 21952 25088 30142 33614 34448 38416 43904 60284 67228 68896 76832 87808 105497 117649 120568 134456 137792 153664 175616 210994 235298 241136 268912 275584 307328 421988 470596 482272 537824 551168 614656 738479 843976 941192 964544 1075648 1102336 1229312 1476958 1687952 1882384 1929088 2151296 2953916 3375904 3764768 3858176 4302592 5169353 5907832 6751808 7529536 7716352 8605184 10338706 11815664 13503616 15059072 20677412 23631328 27007232 30118144 36185471 41354824 47262656 54014464 60236288 72370942 82709648 94525312 144741884 165419296 189050624 253298297 289483768 330838592 378101248 506596594 578967536 661677184 1013193188 1157935072 1323354368 2026386376 2315870144 2646708736 4052772752 4631740288 8105545504 9263480576 16211091008 18526961152 32422182016 64844364032 129688728064
• Sum of all divisors σ(n): 302451564294
• Sum of proper divisors (its aliquot sum) s(n): 172762836230
• 129688728064 is an abundant number, because the sum of its proper divisors (172762836230) is greater than itself. Its abundance is 43074108166

Bases of 129688728064

• Binary: 1111000110010000011001111001000000000₂
• Hexadecimal: 0x1E320CF200
• Base-36: 1NKTBJ0G

Squares and roots of 129688728064

• 129688728064 squared (129688728064²) is 16819166186858141188096
• 129688728064 cubed (129688728064³) is 2181256269870669283087500017926144
• The square root of 129688728064 is 360123.2123371111
• The cube root of 129688728064 is 5061.7506071753

Scales and comparisons

• 129,688,728,064 seconds is equal to 4,123 years, 36 weeks, 2 days, 22 hours, 41 minutes, 4 seconds.
• To count from 1 to 129,688,728,064 would take you about eight thousand, two hundred forty-seven 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 129688728064 cubic inches would be around 421.8 feet tall.

Recreational maths with 129688728064

• 129688728064 backwards is 460827886921
• The number of decimal digits it has is: 12
• The sum of 129688728064's digits is 61
• More coming soon!