28980030

Names of 28980030

• Cardinal: 28980030 can be written as Twenty-eight million, nine hundred eighty thousand and thirty.

Scientific notation

• Scientific notation: 2.898003 × 10⁷

Factors of 28980030

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 23612

Divisors of 28980030

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 5 6 10 15 30 41 82 123 205 246 410 615 1230 23561 47122 70683 117805 141366 235610 353415 706830 966001 1932002 2898003 4830005 5796006 9660010 14490015 28980030
• Sum of all divisors σ(n): 71251488
• Sum of proper divisors (its aliquot sum) s(n): 42271458
• 28980030 is an abundant number, because the sum of its proper divisors (42271458) is greater than itself. Its abundance is 13291428

Bases of 28980030

• Binary: 1101110100011001100111110₂
• Hexadecimal: 0x1BA333E
• Base-36: H954U

Squares and roots of 28980030

• 28980030 squared (28980030²) is 839842138800900
• 28980030 cubed (28980030³) is 24338650377714246027000
• The square root of 28980030 is 5383.3103198683
• The cube root of 28980030 is 307.1611443437

Scales and comparisons

• 28,980,030 seconds is equal to 47 weeks, 6 days, 10 hours, 30 seconds.
• To count from 1 to 28,980,030 would take you about nineteen 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 28980030 cubic inches would be around 25.6 feet tall.

Recreational maths with 28980030

• 28980030 backwards is 03008982
• 28980030 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28980030's digits is 30
• More coming soon!