61381800

Names of 61381800

• Cardinal: 61381800 can be written as Sixty-one million, three hundred eighty-one thousand, eight hundred.

Scientific notation

• Scientific notation: 6.13818 × 10⁷

Factors of 61381800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 431

Divisors of 61381800

• Number of divisors d(n): 168
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 81 90 100 108 120 135 150 162 180 200 216 225 243 270 300 324 360 405 421 450 486 540 600 648 675 729 810 842 900 972 1080 1215 1263 1350 1458 1620 1684 1800 1944 2025 2105 2430 2526 2700 2916 3240 3368 3645 3789 4050 4210 4860 5052 5400 5832 6075 6315 7290 7578 8100 8420 9720 10104 10525 11367 12150 12630 14580 15156 16200 16840 18225 18945 21050 22734 24300 25260 29160 30312 31575 34101 36450 37890 42100 45468 48600 50520 56835 63150 68202 72900 75780 84200 90936 94725 102303 113670 126300 136404 145800 151560 170505 189450 204606 227340 252600 272808 284175 306909 341010 378900 409212 454680 511515 568350 613818 682020 757800 818424 852525 1023030 1136700 1227636 1364040 1534545 1705050 2046060 2273400 2455272 2557575 3069090 3410100 4092120 5115150 6138180 6820200 7672725 10230300 12276360 15345450 20460600 30690900 61381800
• Sum of all divisors σ(n): 214479390
• Sum of proper divisors (its aliquot sum) s(n): 153097590
• 61381800 is an abundant number, because the sum of its proper divisors (153097590) is greater than itself. Its abundance is 91715790

Bases of 61381800

• Binary: 11101010001001110010101000₂
• Hexadecimal: 0x3A89CA8
• Base-36: 10JMI0

Squares and roots of 61381800

• 61381800 squared (61381800²) is 3767725371240000
• 61381800 cubed (61381800³) is 231269765192379432000000
• The square root of 61381800 is 7834.6537894153
• The cube root of 61381800 is 394.4692974415

Scales and comparisons

• 61,381,800 seconds is equal to 1 year, 49 weeks, 3 days, 10 hours, 30 minutes.
• To count from 1 to 61,381,800 would take you about two 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 61381800 cubic inches would be around 32.9 feet tall.

Recreational maths with 61381800

• 61381800 backwards is 00818316
• 61381800 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 61381800's digits is 27
• More coming soon!