28900000

Names of 28900000

• Cardinal: 28900000 can be written as Twenty-eight million, nine hundred thousand.

Scientific notation

• Scientific notation: 2.89 × 10⁷

Factors of 28900000

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 24

Divisors of 28900000

• Number of divisors d(n): 108
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 25 32 34 40 50 68 80 85 100 125 136 160 170 200 250 272 289 340 400 425 500 544 578 625 680 800 850 1000 1156 1250 1360 1445 1700 2000 2125 2312 2500 2720 2890 3125 3400 4000 4250 4624 5000 5780 6250 6800 7225 8500 9248 10000 10625 11560 12500 13600 14450 17000 20000 21250 23120 25000 28900 34000 36125 42500 46240 50000 53125 57800 68000 72250 85000 100000 106250 115600 144500 170000 180625 212500 231200 289000 340000 361250 425000 578000 722500 850000 903125 1156000 1445000 1700000 1806250 2890000 3612500 5780000 7225000 14450000 28900000
• Sum of all divisors σ(n): 75545946
• Sum of proper divisors (its aliquot sum) s(n): 46645946
• 28900000 is an abundant number, because the sum of its proper divisors (46645946) is greater than itself. Its abundance is 17745946

Bases of 28900000

• Binary: 1101110001111101010100000₂
• Hexadecimal: 0x1B8FAA0
• Base-36: H7FDS

Squares and roots of 28900000

• 28900000 squared (28900000²) is 835210000000000
• 28900000 cubed (28900000³) is 24137569000000000000000
• The square root of 28900000 is 5375.8720222863
• The cube root of 28900000 is 306.8781360161

Scales and comparisons

• 28,900,000 seconds is equal to 47 weeks, 5 days, 11 hours, 46 minutes, 40 seconds.
• To count from 1 to 28,900,000 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 28900000 cubic inches would be around 25.6 feet tall.

Recreational maths with 28900000

• 28900000 backwards is 00000982
• The number of decimal digits it has is: 8
• The sum of 28900000's digits is 19
• More coming soon!