861421568

Names of 861421568

• Cardinal: 861421568 can be written as Eight hundred sixty-one million, four hundred twenty-one thousand, five hundred sixty-eight.

Scientific notation

• Scientific notation: 8.61421568 × 10⁸

Factors of 861421568

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 75

Divisors of 861421568

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 4 7 8 14 16 28 29 32 37 49 56 58 64 74 98 112 116 128 148 196 203 224 232 256 259 296 392 406 448 464 512 518 592 784 812 896 928 1024 1036 1073 1184 1421 1568 1624 1792 1813 1856 2048 2072 2146 2368 2842 3136 3248 3584 3626 3712 4096 4144 4292 4736 5684 6272 6496 7168 7252 7424 7511 8192 8288 8584 9472 11368 12544 12992 14336 14504 14848 15022 16384 16576 17168 18944 22736 25088 25984 28672 29008 29696 30044 33152 34336 37888 45472 50176 51968 52577 57344 58016 59392 60088 66304 68672 75776 90944 100352 103936 105154 114688 116032 118784 120176 132608 137344 151552 181888 200704 207872 210308 232064 237568 240352 265216 274688 303104 363776 401408 415744 420616 464128 475136 480704 530432 549376 606208 727552 802816 831488 841232 928256 961408 1060864 1098752 1455104 1662976 1682464 1856512 1922816 2121728 2197504 2910208 3325952 3364928 3713024 3845632 4243456 4395008 5820416 6729856 7426048 7691264 8790016 11640832 13459712 14852096 15382528 17580032 23281664 26919424 29704192 30765056 53838848 61530112 107677696 123060224 215355392 430710784 861421568
• Sum of all divisors σ(n): 2129199660
• Sum of proper divisors (its aliquot sum) s(n): 1267778092
• 861421568 is an abundant number, because the sum of its proper divisors (1267778092) is greater than itself. Its abundance is 406356524

Bases of 861421568

• Binary: 110011010110000100000000000000₂
• Hexadecimal: 0x33584000
• Base-36: E8V94W

Squares and roots of 861421568

• 861421568 squared (861421568²) is 742047117815578624
• 861421568 cubed (861421568³) is 639215391758576473113362432
• The square root of 861421568 is 29349.9841226533
• The cube root of 861421568 is 951.4922321037

Scales and comparisons

• 861,421,568 seconds is equal to 27 years, 20 weeks, 2 days, 3 hours, 46 minutes, 8 seconds.
• To count from 1 to 861,421,568 would take you about forty-one 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 861421568 cubic inches would be around 79.3 feet tall.

Recreational maths with 861421568

• 861421568 backwards is 865124168
• The number of decimal digits it has is: 9
• The sum of 861421568's digits is 41
• More coming soon!