90821705728

Names of 90821705728

• Cardinal: 90821705728 can be written as Ninety billion, eight hundred twenty-one million, seven hundred five thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 9.0821705728 × 10¹⁰

Factors of 90821705728

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 17
• Sum of prime factors: 668

Divisors of 90821705728

• Number of divisors d(n): 90
• Complete list of divisors:
  1 2 4 8 13 16 26 32 52 64 104 128 208 256 416 512 653 832 1024 1306 1664 2048 2612 3328 4096 5224 6656 8192 8489 10448 13312 16384 16978 20896 26624 33956 41792 53248 67912 83584 106496 135824 167168 212992 271648 334336 426409 543296 668672 852818 1086592 1337344 1705636 2173184 2674688 3411272 4346368 5349376 5543317 6822544 8692736 10698752 11086634 13645088 17385472 22173268 27290176 34770944 44346536 54580352 69541888 88693072 109160704 139083776 177386144 218321408 354772288 436642816 709544576 873285632 1419089152 1746571264 2838178304 3493142528 5676356608 6986285056 11352713216 22705426432 45410852864 90821705728
• Sum of all divisors σ(n): 195910026494
• Sum of proper divisors (its aliquot sum) s(n): 105088320766
• 90821705728 is an abundant number, because the sum of its proper divisors (105088320766) is greater than itself. Its abundance is 14266615038

Bases of 90821705728

• Binary: 1010100100101011001010100000000000000₂
• Hexadecimal: 0x1525654000
• Base-36: 15Q0WCN4

Squares and roots of 90821705728

• 90821705728 squared (90821705728²) is 8248582231343428009984
• 90821705728 cubed (90821705728³) is 749150308088282436829519493988352
• The square root of 90821705728 is 301366.3978083821
• The cube root of 90821705728 is 4495.0019525333

Scales and comparisons

• 90,821,705,728 seconds is equal to 2,887 years, 44 weeks, 1 day, 3 hours, 35 minutes, 28 seconds.
• To count from 1 to 90,821,705,728 would take you about five thousand, seven hundred seventy-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 90821705728 cubic inches would be around 374.6 feet tall.

Recreational maths with 90821705728

• 90821705728 backwards is 82750712809
• The number of decimal digits it has is: 11
• The sum of 90821705728's digits is 49
• More coming soon!