90919017728

Names of 90919017728

• Cardinal: 90919017728 can be written as Ninety billion, nine hundred nineteen million, seventeen thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 9.0919017728 × 10¹⁰

Factors of 90919017728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 4612389

Divisors of 90919017728

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 7 8 11 14 16 22 28 32 44 56 64 77 88 112 128 154 176 224 256 308 352 448 616 704 896 1232 1408 1792 2464 2816 4928 9856 19712 4612369 9224738 18449476 32286583 36898952 50736059 64573166 73797904 101472118 129146332 147595808 202944236 258292664 295191616 355152413 405888472 516585328 590383232 710304826 811776944 1033170656 1180766464 1420609652 1623553888 2066341312 2841219304 3247107776 4132682624 5682438608 6494215552 8265365248 11364877216 12988431104 22729754432 45459508864 90919017728
• Sum of all divisors σ(n): 226264422720
• Sum of proper divisors (its aliquot sum) s(n): 135345404992
• 90919017728 is an abundant number, because the sum of its proper divisors (135345404992) is greater than itself. Its abundance is 44426387264

Bases of 90919017728

• Binary: 1010100101011001100100001110100000000₂
• Hexadecimal: 0x152B321D00
• Base-36: 15RMU328

Squares and roots of 90919017728

• 90919017728 squared (90919017728²) is 8266267784624378281984
• 90919017728 cubed (90919017728³) is 751560947254659134840681479012352
• The square root of 90919017728 is 301527.8058952441
• The cube root of 90919017728 is 4496.6067873173

Scales and comparisons

• 90,919,017,728 seconds is equal to 2,890 years, 49 weeks, 10 hours, 42 minutes, 8 seconds.
• To count from 1 to 90,919,017,728 would take you about five thousand, seven hundred eighty-one 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 90919017728 cubic inches would be around 374.7 feet tall.

Recreational maths with 90919017728

• 90919017728 backwards is 82771091909
• The number of decimal digits it has is: 11
• The sum of 90919017728's digits is 53
• More coming soon!