991297664
991,297,664 is an even composite number composed of five prime numbers multiplied together.
991297664 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 991297664:
27 × 7 × 31 × 89 × 401
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 31 × 89 × 401)See below for interesting mathematical facts about the number 991297664 from the Numbermatics database.
Names of 991297664
- Cardinal: 991297664 can be written as Nine hundred ninety-one million, two hundred ninety-seven thousand, six hundred sixty-four.
Scientific notation
- Scientific notation: 9.91297664 × 108
Factors of 991297664
Divisors of 991297664
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 4 7 8 14 16 28 31 32 56 62 64 89 112 124 128 178 217 224 248 356 401 434 448 496 623 712 802 868 896 992 1246 1424 1604 1736 1984 2492 2759 2807 2848 3208 3472 3968 4984 5518 5614 5696 6416 6944 9968 11036 11228 11392 12431 12832 13888 19313 19936 22072 22456 24862 25664 27776 35689 38626 39872 44144 44912 49724 51328 71378 77252 79744 87017 88288 89824 99448 142756 154504 174034 176576 179648 198896 249823 285512 309008 348068 353152 359296 397792 499646 571024 618016 696136 795584 999292 1106359 1142048 1236032 1392272 1591168 1998584 2212718 2284096 2472064 2784544 3997168 4425436 4568192 5569088 7744513 7994336 8850872 11138176 15489026 15988672 17701744 30978052 31977344 35403488 61956104 70806976 123912208 141613952 247824416 495648832 991297664
- Sum of all divisors σ(n): 2361830400
- Sum of proper divisors (its aliquot sum) s(n): 1370532736
- 991297664 is an abundant number, because the sum of its proper divisors (1370532736) is greater than itself. Its abundance is 379235072
Bases of 991297664
- Binary: 1110110001011000000000100000002
- Hexadecimal: 0x3B160080
- Base-36: GE6Y68
Squares and roots of 991297664
- 991297664 squared (9912976642) is 982671058651856896
- 991297664 cubed (9912976643) is 974119524921992730267090944
-
The
square root of 991297664 is 31484.8799267203 -
The
cube root of 991297664 is 997.0907658979
Scales and comparisons
How big is 991297664?- 991,297,664 seconds is equal to 31 years, 27 weeks, 8 hours, 27 minutes, 44 seconds.
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To count from 1 to 991,297,664 would take you about forty-seven 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 991297664 cubic inches would be around 83.1 feet tall.
Recreational maths with 991297664
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