13129740

Names of 13129740

• Cardinal: 13129740 can be written as Thirteen million, one hundred twenty-nine thousand, seven hundred forty.

Scientific notation

• Scientific notation: 1.312974 × 10⁷

Factors of 13129740

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 235

Divisors of 13129740

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 26 30 31 36 39 45 52 60 62 65 78 90 93 117 124 130 155 156 180 181 186 195 234 260 279 310 362 372 390 403 465 468 543 558 585 620 724 780 806 905 930 1086 1116 1170 1209 1395 1612 1629 1810 1860 2015 2172 2340 2353 2418 2715 2790 3258 3620 3627 4030 4706 4836 5430 5580 5611 6045 6516 7059 7254 8060 8145 9412 10860 11222 11765 12090 14118 14508 16290 16833 18135 21177 22444 23530 24180 28055 28236 32580 33666 35295 36270 42354 47060 50499 56110 67332 70590 72540 72943 84165 84708 100998 105885 112220 141180 145886 168330 201996 211770 218829 252495 291772 336660 364715 423540 437658 504990 656487 729430 875316 1009980 1094145 1312974 1458860 2188290 2625948 3282435 4376580 6564870 13129740
• Sum of all divisors σ(n): 44518656
• Sum of proper divisors (its aliquot sum) s(n): 31388916
• 13129740 is an abundant number, because the sum of its proper divisors (31388916) is greater than itself. Its abundance is 18259176

Bases of 13129740

• Binary: 110010000101100000001100₂
• Hexadecimal: 0xC8580C
• Base-36: 7TEZ0

Squares and roots of 13129740

• 13129740 squared (13129740²) is 172390072467600
• 13129740 cubed (13129740³) is 2263436830080746424000
• The square root of 13129740 is 3623.4983096449
• The cube root of 13129740 is 235.9130916229

Scales and comparisons

• 13,129,740 seconds is equal to 21 weeks, 4 days, 23 hours, 9 minutes.
• To count from 1 to 13,129,740 would take you about thirty-two weeks!

  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 13129740 cubic inches would be around 19.7 feet tall.

Recreational maths with 13129740

• 13129740 backwards is 04792131
• The number of decimal digits it has is: 8
• The sum of 13129740's digits is 27
• More coming soon!