30021640

Names of 30021640

• Cardinal: 30021640 can be written as Thirty million, twenty-one thousand, six hundred forty.

Scientific notation

• Scientific notation: 3.002164 × 10⁷

Factors of 30021640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 120

Divisors of 30021640

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 31 40 44 55 62 71 88 110 124 142 155 220 248 284 310 341 355 440 568 620 682 710 781 961 1240 1364 1420 1562 1705 1922 2201 2728 2840 3124 3410 3844 3905 4402 4805 6248 6820 7688 7810 8804 9610 10571 11005 13640 15620 17608 19220 21142 22010 24211 31240 38440 42284 44020 48422 52855 68231 84568 88040 96844 105710 121055 136462 193688 211420 242110 272924 341155 422840 484220 545848 682310 750541 968440 1364620 1501082 2729240 3002164 3752705 6004328 7505410 15010820 30021640
• Sum of all divisors σ(n): 77215680
• Sum of proper divisors (its aliquot sum) s(n): 47194040
• 30021640 is an abundant number, because the sum of its proper divisors (47194040) is greater than itself. Its abundance is 17172400

Bases of 30021640

• Binary: 1110010100001100000001000₂
• Hexadecimal: 0x1CA1808
• Base-36: HVGUG

Squares and roots of 30021640

• 30021640 squared (30021640²) is 901298868289600
• 30021640 cubed (30021640³) is 27058470156197786944000
• The square root of 30021640 is 5479.2006716309
• The cube root of 30021640 is 310.7979443179

Scales and comparisons

• 30,021,640 seconds is equal to 49 weeks, 4 days, 11 hours, 20 minutes, 40 seconds.
• To count from 1 to 30,021,640 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 30021640 cubic inches would be around 25.9 feet tall.

Recreational maths with 30021640

• 30021640 backwards is 04612003
• The number of decimal digits it has is: 8
• The sum of 30021640's digits is 16
• More coming soon!