13240720

Names of 13240720

• Cardinal: 13240720 can be written as Thirteen million, two hundred forty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.324072 × 10⁷

Factors of 13240720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 338

Divisors of 13240720

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 31 38 40 62 76 80 95 124 152 155 190 248 281 304 310 380 496 562 589 620 760 1124 1178 1240 1405 1520 2248 2356 2480 2810 2945 4496 4712 5339 5620 5890 8711 9424 10678 11240 11780 17422 21356 22480 23560 26695 34844 42712 43555 47120 53390 69688 85424 87110 106780 139376 165509 174220 213560 331018 348440 427120 662036 696880 827545 1324072 1655090 2648144 3310180 6620360 13240720
• Sum of all divisors σ(n): 33569280
• Sum of proper divisors (its aliquot sum) s(n): 20328560
• 13240720 is an abundant number, because the sum of its proper divisors (20328560) is greater than itself. Its abundance is 7087840

Bases of 13240720

• Binary: 110010100000100110010000₂
• Hexadecimal: 0xCA0990
• Base-36: 7VSLS

Squares and roots of 13240720

• 13240720 squared (13240720²) is 175316666118400
• 13240720 cubed (13240720³) is 2321318887407221248000
• The square root of 13240720 is 3638.7800153349
• The cube root of 13240720 is 236.5759179503

Scales and comparisons

• 13,240,720 seconds is equal to 21 weeks, 6 days, 5 hours, 58 minutes, 40 seconds.
• To count from 1 to 13,240,720 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 13240720 cubic inches would be around 19.7 feet tall.

Recreational maths with 13240720

• 13240720 backwards is 02704231
• 13240720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 13240720's digits is 19
• More coming soon!