13205920

Names of 13205920

• Cardinal: 13205920 can be written as Thirteen million, two hundred five thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 1.320592 × 10⁷

Factors of 13205920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 934

Divisors of 13205920

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 7 8 10 13 14 16 20 26 28 32 35 40 52 56 65 70 80 91 104 112 130 140 160 182 208 224 260 280 364 416 455 520 560 728 907 910 1040 1120 1456 1814 1820 2080 2912 3628 3640 4535 6349 7256 7280 9070 11791 12698 14512 14560 18140 23582 25396 29024 31745 36280 47164 50792 58955 63490 72560 82537 94328 101584 117910 126980 145120 165074 188656 203168 235820 253960 330148 377312 412685 471640 507920 660296 825370 943280 1015840 1320592 1650740 1886560 2641184 3301480 6602960 13205920
• Sum of all divisors σ(n): 38441088
• Sum of proper divisors (its aliquot sum) s(n): 25235168
• 13205920 is an abundant number, because the sum of its proper divisors (25235168) is greater than itself. Its abundance is 12029248

Bases of 13205920

• Binary: 110010011000000110100000₂
• Hexadecimal: 0xC981A0
• Base-36: 7V1R4

Squares and roots of 13205920

• 13205920 squared (13205920²) is 174396323046400
• 13205920 cubed (13205920³) is 2303063890444914688000
• The square root of 13205920 is 3633.9950467771
• The cube root of 13205920 is 236.3684754255

Scales and comparisons

• 13,205,920 seconds is equal to 21 weeks, 5 days, 20 hours, 18 minutes, 40 seconds.
• To count from 1 to 13,205,920 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 13205920 cubic inches would be around 19.7 feet tall.

Recreational maths with 13205920

• 13205920 backwards is 02950231
• The number of decimal digits it has is: 8
• The sum of 13205920's digits is 22
• More coming soon!