30997800

Names of 30997800

• Cardinal: 30997800 can be written as Thirty million, nine hundred ninety-seven thousand, eight hundred.

Scientific notation

• Scientific notation: 3.09978 × 10⁷

Factors of 30997800

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1040

Divisors of 30997800

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 17 18 20 24 25 30 34 36 40 45 50 51 60 68 72 75 85 90 100 102 120 136 150 153 170 180 200 204 225 255 300 306 340 360 408 425 450 510 600 612 680 765 850 900 1013 1020 1224 1275 1530 1700 1800 2026 2040 2550 3039 3060 3400 3825 4052 5065 5100 6078 6120 7650 8104 9117 10130 10200 12156 15195 15300 17221 18234 20260 24312 25325 30390 30600 34442 36468 40520 45585 50650 51663 60780 68884 72936 75975 86105 91170 101300 103326 121560 137768 151950 154989 172210 182340 202600 206652 227925 258315 303900 309978 344420 364680 413304 430525 455850 516630 607800 619956 688840 774945 861050 911700 1033260 1239912 1291575 1549890 1722100 1823400 2066520 2583150 3099780 3444200 3874725 5166300 6199560 7749450 10332600 15498900 30997800
• Sum of all divisors σ(n): 110333340
• Sum of proper divisors (its aliquot sum) s(n): 79335540
• 30997800 is an abundant number, because the sum of its proper divisors (79335540) is greater than itself. Its abundance is 48337740

Bases of 30997800

• Binary: 1110110001111110100101000₂
• Hexadecimal: 0x1D8FD28
• Base-36: IGE20

Squares and roots of 30997800

• 30997800 squared (30997800²) is 960863604840000
• 30997800 cubed (30997800³) is 29784657850109352000000
• The square root of 30997800 is 5567.5667934925
• The cube root of 30997800 is 314.1306338403

Scales and comparisons

• 30,997,800 seconds is equal to 51 weeks, 1 day, 18 hours, 30 minutes.
• To count from 1 to 30,997,800 would take you about twenty-four 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 30997800 cubic inches would be around 26.2 feet tall.

Recreational maths with 30997800

• 30997800 backwards is 00879903
• 30997800 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 30997800's digits is 36
• More coming soon!