129257672136720

Names of 129257672136720

• Cardinal: 129257672136720 can be written as One hundred twenty-nine trillion, two hundred fifty-seven billion, six hundred seventy-two million, one hundred thirty-six thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.2925767213672 × 10¹⁴

Factors of 129257672136720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3614588306

Divisors of 129257672136720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 149 240 298 447 596 745 894 1192 1490 1788 2235 2384 2980 3576 4470 5960 7152 8940 11920 17880 35760 3614588147 7229176294 10843764441 14458352588 18072940735 21687528882 28916705176 36145881470 43375057764 54218822205 57833410352 72291762940 86750115528 108437644410 144583525880 173500231056 216875288820 289167051760 433750577640 538573633903 867501155280 1077147267806 1615720901709 2154294535612 2692868169515 3231441803418 4308589071224 5385736339030 6462883606836 8078604508545 8617178142448 10771472678060 12925767213672 16157209017090 21542945356120 25851534427344 32314418034180 43085890712240 64628836068360 129257672136720
• Sum of all divisors σ(n): 403388037316800
• Sum of proper divisors (its aliquot sum) s(n): 274130365180080
• 129257672136720 is an abundant number, because the sum of its proper divisors (274130365180080) is greater than itself. Its abundance is 144872693043360

Bases of 129257672136720

• Binary: 11101011000111100100101101000011101100000010000₂
• Hexadecimal: 0x758F25A1D810
• Base-36: 19TG5KNM6O

Squares and roots of 129257672136720

• 129257672136720 squared (129257672136720²) is 16707545806203801850372358400
• 129257672136720 cubed (129257672136720³) is 2159578478027522247352607168916553640448000
• The square root of 129257672136720 is 11369154.4160821389
• The cube root of 129257672136720 is 50561.3634527917

Scales and comparisons

• 129,257,672,136,720 seconds is equal to 4,109,994 years, 7 weeks, 6 days, 22 hours, 52 minutes.
• To count from 1 to 129,257,672,136,720 would take you about ten million, two hundred seventy-four thousand, nine hundred eighty-five 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 129257672136720 cubic inches would be around 4213.4 feet tall.

Recreational maths with 129257672136720

• 129257672136720 backwards is 027631276752921
• 129257672136720 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 129257672136720's digits is 60
• More coming soon!