30486640

Names of 30486640

• Cardinal: 30486640 can be written as Thirty million, four hundred eighty-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 3.048664 × 10⁷

Factors of 30486640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 704

Divisors of 30486640

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 31 38 40 62 76 80 95 124 152 155 190 248 304 310 380 496 589 620 647 760 1178 1240 1294 1520 2356 2480 2588 2945 3235 4712 5176 5890 6470 9424 10352 11780 12293 12940 20057 23560 24586 25880 40114 47120 49172 51760 61465 80228 98344 100285 122930 160456 196688 200570 245860 320912 381083 401140 491720 762166 802280 983440 1524332 1604560 1905415 3048664 3810830 6097328 7621660 15243320 30486640
• Sum of all divisors σ(n): 77137920
• Sum of proper divisors (its aliquot sum) s(n): 46651280
• 30486640 is an abundant number, because the sum of its proper divisors (46651280) is greater than itself. Its abundance is 16164640

Bases of 30486640

• Binary: 1110100010011000001110000₂
• Hexadecimal: 0x1D13070
• Base-36: I5FN4

Squares and roots of 30486640

• 30486640 squared (30486640²) is 929435218489600
• 30486640 cubed (30486640³) is 28335356909413778944000
• The square root of 30486640 is 5521.4708185411
• The cube root of 30486640 is 312.3943621607

Scales and comparisons

• 30,486,640 seconds is equal to 50 weeks, 2 days, 20 hours, 30 minutes, 40 seconds.
• To count from 1 to 30,486,640 would take you about twenty-three 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 30486640 cubic inches would be around 26 feet tall.

Recreational maths with 30486640

• 30486640 backwards is 04668403
• 30486640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30486640's digits is 31
• More coming soon!