30159990

Names of 30159990

• Cardinal: 30159990 can be written as Thirty million, one hundred fifty-nine thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 3.015999 × 10⁷

Factors of 30159990

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 994

Divisors of 30159990

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 30 35 42 45 49 63 70 90 98 105 126 147 210 245 294 315 343 441 490 630 686 735 882 977 1029 1470 1715 1954 2058 2205 2931 3087 3430 4410 4885 5145 5862 6174 6839 8793 9770 10290 13678 14655 15435 17586 20517 29310 30870 34195 41034 43965 47873 61551 68390 87930 95746 102585 123102 143619 205170 239365 287238 307755 335111 430857 478730 615510 670222 718095 861714 1005333 1436190 1675555 2010666 2154285 3015999 3351110 4308570 5026665 6031998 10053330 15079995 30159990
• Sum of all divisors σ(n): 91540800
• Sum of proper divisors (its aliquot sum) s(n): 61380810
• 30159990 is an abundant number, because the sum of its proper divisors (61380810) is greater than itself. Its abundance is 31220820

Bases of 30159990

• Binary: 1110011000011010001110110₂
• Hexadecimal: 0x1CC3476
• Base-36: HYFLI

Squares and roots of 30159990

• 30159990 squared (30159990²) is 909624996800100
• 30159990 cubed (30159990³) is 27434280807241047999000
• The square root of 30159990 is 5491.8111766521
• The cube root of 30159990 is 311.2746339433

Scales and comparisons

• 30,159,990 seconds is equal to 49 weeks, 6 days, 1 hour, 46 minutes, 30 seconds.
• To count from 1 to 30,159,990 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 30159990 cubic inches would be around 25.9 feet tall.

Recreational maths with 30159990

• 30159990 backwards is 09995103
• The number of decimal digits it has is: 8
• The sum of 30159990's digits is 36
• More coming soon!