30001920

Names of 30001920

• Cardinal: 30001920 can be written as Thirty million, one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 3.000192 × 10⁷

Factors of 30001920

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 624

Divisors of 30001920

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 48 52 60 64 65 78 80 96 104 120 128 130 156 160 192 195 208 240 256 260 312 320 384 390 416 480 520 601 624 640 768 780 832 960 1040 1202 1248 1280 1560 1664 1803 1920 2080 2404 2496 3005 3120 3328 3606 3840 4160 4808 4992 6010 6240 7212 7813 8320 9015 9616 9984 12020 12480 14424 15626 16640 18030 19232 23439 24040 24960 28848 31252 36060 38464 39065 46878 48080 49920 57696 62504 72120 76928 78130 93756 96160 115392 117195 125008 144240 153856 156260 187512 192320 230784 234390 250016 288480 312520 375024 384640 461568 468780 500032 576960 625040 750048 769280 937560 1000064 1153920 1250080 1500096 1875120 2000128 2307840 2500160 3000192 3750240 5000320 6000384 7500480 10000640 15000960 30001920
• Sum of all divisors σ(n): 103360992
• Sum of proper divisors (its aliquot sum) s(n): 73359072
• 30001920 is an abundant number, because the sum of its proper divisors (73359072) is greater than itself. Its abundance is 43357152

Bases of 30001920

• Binary: 1110010011100101100000000₂
• Hexadecimal: 0x1C9CB00
• Base-36: HV1MO

Squares and roots of 30001920

• 30001920 squared (30001920²) is 900115203686400
• 30001920 cubed (30001920³) is 27005184331783077888000
• The square root of 30001920 is 5477.4008434659
• The cube root of 30001920 is 310.7298792167

Scales and comparisons

• 30,001,920 seconds is equal to 49 weeks, 4 days, 5 hours, 52 minutes.
• To count from 1 to 30,001,920 would take you about twenty-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 30001920 cubic inches would be around 25.9 feet tall.

Recreational maths with 30001920

• 30001920 backwards is 02910003
• 30001920 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30001920's digits is 15
• More coming soon!