129785128960

Names of 129785128960

• Cardinal: 129785128960 can be written as One hundred twenty-nine billion, seven hundred eighty-five million, one hundred twenty-eight thousand, nine hundred sixty.

Scientific notation

• Scientific notation: 1.2978512896 × 10¹¹

Factors of 129785128960

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 14417

Divisors of 129785128960

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 941 1024 1280 1882 2048 2560 3764 4705 5120 7528 9410 10240 13469 15056 18820 26938 30112 37640 53876 60224 67345 75280 107752 120448 134690 150560 215504 240896 269380 301120 431008 481792 538760 602240 862016 963584 1077520 1204480 1724032 1927168 2155040 2408960 3448064 4310080 4817920 6896128 8620160 9635840 12674329 13792256 17240320 25348658 27584512 34480640 50697316 63371645 68961280 101394632 126743290 137922560 202789264 253486580 405578528 506973160 811157056 1013946320 1622314112 2027892640 3244628224 4055785280 6489256448 8111570560 12978512896 16223141120 25957025792 32446282240 64892564480 129785128960
• Sum of all divisors σ(n): 311762341800
• Sum of proper divisors (its aliquot sum) s(n): 181977212840
• 129785128960 is an abundant number, because the sum of its proper divisors (181977212840) is greater than itself. Its abundance is 52192083880

Bases of 129785128960

• Binary: 1111000110111110010111110100000000000₂
• Hexadecimal: 0x1E37CBE800
• Base-36: 1NMEPQF4

Squares and roots of 129785128960

• 129785128960 squared (129785128960²) is 16844179699163830681600
• 129785128960 cubed (129785128960³) is 2186124034481391769179060699136000
• The square root of 129785128960 is 360257.0317981313
• The cube root of 129785128960 is 5063.0044720959

Scales and comparisons

• 129,785,128,960 seconds is equal to 4,126 years, 39 weeks, 5 days, 16 hours, 42 minutes, 40 seconds.
• To count from 1 to 129,785,128,960 would take you about eight thousand, two hundred fifty-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 129785128960 cubic inches would be around 421.9 feet tall.

Recreational maths with 129785128960

• 129785128960 backwards is 069821587921
• The number of decimal digits it has is: 12
• The sum of 129785128960's digits is 58
• More coming soon!