128500450

Names of 128500450

• Cardinal: 128500450 can be written as One hundred twenty-eight million, five hundred thousand, four hundred fifty.

Scientific notation

• Scientific notation: 1.2850045 × 10⁸

Factors of 128500450

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 467

Divisors of 128500450

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 5 10 13 17 25 26 29 34 50 58 65 85 130 145 170 221 290 325 377 401 425 442 493 650 725 754 802 850 986 1105 1450 1885 2005 2210 2465 3770 4010 4930 5213 5525 6409 6817 9425 10025 10426 11050 11629 12325 12818 13634 18850 20050 23258 24650 26065 32045 34085 52130 58145 64090 68170 88621 116290 130325 151177 160225 170425 177242 197693 260650 290725 302354 320450 340850 395386 443105 581450 755885 886210 988465 1511770 1976930 2215525 2570009 3779425 4431050 4942325 5140018 7558850 9884650 12850045 25700090 64250225 128500450
• Sum of all divisors σ(n): 282638160
• Sum of proper divisors (its aliquot sum) s(n): 154137710
• 128500450 is an abundant number, because the sum of its proper divisors (154137710) is greater than itself. Its abundance is 25637260

Bases of 128500450

• Binary: 111101010001100001011100010₂
• Hexadecimal: 0x7A8C2E2
• Base-36: 24I7KY

Squares and roots of 128500450

• 128500450 squared (128500450²) is 16512365650202500
• 128500450 cubed (128500450³) is 2121846416615563841125000
• The square root of 128500450 is 11335.8038973863
• The cube root of 128500450 is 504.6243653031

Scales and comparisons

• 128,500,450 seconds is equal to 4 years, 4 weeks, 3 days, 6 hours, 34 minutes, 10 seconds.
• To count from 1 to 128,500,450 would take you about six years!

  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 128500450 cubic inches would be around 42.1 feet tall.

Recreational maths with 128500450

• 128500450 backwards is 054005821
• 128500450 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 128500450's digits is 25
• More coming soon!