2128160720

Names of 2128160720

• Cardinal: 2128160720 can be written as Two billion, one hundred twenty-eight million, one hundred sixty thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.12816072 × 10⁹

Factors of 2128160720

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3800301

Divisors of 2128160720

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 3800287 7600574 15201148 19001435 26602009 30402296 38002870 53204018 60804592 76005740 106408036 133010045 152011480 212816072 266020090 304022960 425632144 532040180 1064080360 2128160720
• Sum of all divisors σ(n): 5654828544
• Sum of proper divisors (its aliquot sum) s(n): 3526667824
• 2128160720 is an abundant number, because the sum of its proper divisors (3526667824) is greater than itself. Its abundance is 1398507104

Bases of 2128160720

• Binary: 1111110110110010010011111010000₂
• Hexadecimal: 0x7ED927D0
• Base-36: Z71VBK

Squares and roots of 2128160720

• 2128160720 squared (2128160720²) is 4529068050150918400
• 2128160720 cubed (2128160720³) is 9638584722538174610805248000
• The square root of 2128160720 is 46131.9923697211
• The cube root of 2128160720 is 1286.2778992557

Scales and comparisons

• 2,128,160,720 seconds is equal to 67 years, 34 weeks, 5 days, 11 hours, 45 minutes, 20 seconds.
• To count from 1 to 2,128,160,720 would take you about one hundred thirty-five 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 2128160720 cubic inches would be around 107.2 feet tall.

Recreational maths with 2128160720

• 2128160720 backwards is 0270618212
• The number of decimal digits it has is: 10
• The sum of 2128160720's digits is 29
• More coming soon!