61380720

Names of 61380720

• Cardinal: 61380720 can be written as Sixty-one million, three hundred eighty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 6.138072 × 10⁷

Factors of 61380720

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 348

Divisors of 61380720

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 72 80 90 108 120 135 144 157 180 181 216 240 270 314 360 362 432 471 540 543 628 720 724 785 905 942 1080 1086 1256 1413 1448 1570 1629 1810 1884 2160 2172 2355 2512 2715 2826 2896 3140 3258 3620 3768 4239 4344 4710 4887 5430 5652 6280 6516 7065 7240 7536 8145 8478 8688 9420 9774 10860 11304 12560 13032 14130 14480 16290 16956 18840 19548 21195 21720 22608 24435 26064 28260 28417 32580 33912 37680 39096 42390 43440 48870 56520 56834 65160 67824 78192 84780 85251 97740 113040 113668 130320 142085 169560 170502 195480 227336 255753 284170 339120 341004 390960 426255 454672 511506 568340 682008 767259 852510 1023012 1136680 1278765 1364016 1534518 1705020 2046024 2273360 2557530 3069036 3410040 3836295 4092048 5115060 6138072 6820080 7672590 10230120 12276144 15345180 20460240 30690360 61380720
• Sum of all divisors σ(n): 213944640
• Sum of proper divisors (its aliquot sum) s(n): 152563920
• 61380720 is an abundant number, because the sum of its proper divisors (152563920) is greater than itself. Its abundance is 91183200

Bases of 61380720

• Binary: 11101010001001100001110000₂
• Hexadecimal: 0x3A89870
• Base-36: 10JLO0

Squares and roots of 61380720

• 61380720 squared (61380720²) is 3767592787718400
• 61380720 cubed (61380720³) is 231257557976962549248000
• The square root of 61380720 is 7834.5848645603
• The cube root of 61380720 is 394.4669838927

Scales and comparisons

• 61,380,720 seconds is equal to 1 year, 49 weeks, 3 days, 10 hours, 12 minutes.
• To count from 1 to 61,380,720 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 61380720 cubic inches would be around 32.9 feet tall.

Recreational maths with 61380720

• 61380720 backwards is 02708316
• 61380720 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 61380720's digits is 27
• More coming soon!