129618144

Names of 129618144

• Cardinal: 129618144 can be written as One hundred twenty-nine million, six hundred eighteen thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 1.29618144 × 10⁸

Factors of 129618144

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 295

Divisors of 129618144

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 79 81 96 108 144 158 162 211 216 237 243 288 316 324 422 432 474 486 632 633 648 711 844 864 948 972 1264 1266 1296 1422 1688 1896 1899 1944 2133 2528 2532 2592 2844 3376 3792 3798 3888 4266 5064 5688 5697 6399 6752 7584 7596 7776 8532 10128 11376 11394 12798 15192 16669 17064 17091 19197 20256 22752 22788 25596 30384 33338 34128 34182 38394 45576 50007 51192 51273 60768 66676 68256 68364 76788 91152 100014 102384 102546 133352 136728 150021 153576 182304 200028 204768 205092 266704 273456 300042 307152 400056 410184 450063 533408 546912 600084 614304 800112 820368 900126 1200168 1350189 1600224 1640736 1800252 2400336 2700378 3600504 4050567 4800672 5400756 7201008 8101134 10801512 14402016 16202268 21603024 32404536 43206048 64809072 129618144
• Sum of all divisors σ(n): 388926720
• Sum of proper divisors (its aliquot sum) s(n): 259308576
• 129618144 is an abundant number, because the sum of its proper divisors (259308576) is greater than itself. Its abundance is 129690432

Bases of 129618144

• Binary: 111101110011101000011100000₂
• Hexadecimal: 0x7B9D0E0
• Base-36: 256600

Squares and roots of 129618144

• 129618144 squared (129618144²) is 16800863254004736
• 129618144 cubed (129618144³) is 2177696712581894447529984
• The square root of 129618144 is 11384.9964426871
• The cube root of 129618144 is 506.0832141939

Scales and comparisons

• 129,618,144 seconds is equal to 4 years, 6 weeks, 2 days, 5 hours, 2 minutes, 24 seconds.
• To count from 1 to 129,618,144 would take you about 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 129618144 cubic inches would be around 42.2 feet tall.

Recreational maths with 129618144

• 129618144 backwards is 441816921
• 129618144 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 129618144's digits is 36
• More coming soon!