28002515728

Names of 28002515728

• Cardinal: 28002515728 can be written as Twenty-eight billion, two million, five hundred fifteen thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8002515728 × 10¹⁰

Factors of 28002515728

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 4178

Divisors of 28002515728

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 8 11 16 22 43 44 86 88 172 176 344 473 688 946 1321 1892 2642 2801 3784 5284 5602 7568 10568 11204 14531 21136 22408 29062 30811 44816 56803 58124 61622 113606 116248 120443 123244 227212 232496 240886 246488 454424 481772 492976 624833 908848 963544 1249666 1324873 1927088 2499332 2649746 3700121 4998664 5299492 7400242 9997328 10598984 14800484 21197968 29600968 40701331 59201936 81402662 159105203 162805324 318210406 325610648 636420812 651221296 1272841624 1750157233 2545683248 3500314466 7000628932 14001257864 28002515728
• Sum of all divisors σ(n): 60631065792
• Sum of proper divisors (its aliquot sum) s(n): 32628550064
• 28002515728 is an abundant number, because the sum of its proper divisors (32628550064) is greater than itself. Its abundance is 4626034336

Bases of 28002515728

• Binary: 11010000101000101000111101100010000₂
• Hexadecimal: 0x685147B10
• Base-36: CV3Z3F4

Squares and roots of 28002515728

• 28002515728 squared (28002515728²) is 784140887096887369984
• 28002515728 cubed (28002515728³) is 21957917523898460837821515108352
• The square root of 28002515728 is 167339.5223131705
• The cube root of 28002515728 is 3036.6799123891

Scales and comparisons

• 28,002,515,728 seconds is equal to 890 years, 20 weeks, 3 days, 4 hours, 35 minutes, 28 seconds.
• To count from 1 to 28,002,515,728 would take you about one thousand, seven hundred eighty 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 28002515728 cubic inches would be around 253.1 feet tall.

Recreational maths with 28002515728

• 28002515728 backwards is 82751520082
• The number of decimal digits it has is: 11
• The sum of 28002515728's digits is 40
• More coming soon!