991339128
991,339,128 is an even composite number composed of four prime numbers multiplied together.
991339128 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 991339128:
23 × 33 × 133 × 2089
(2 × 2 × 2 × 3 × 3 × 3 × 13 × 13 × 13 × 2089)See below for interesting mathematical facts about the number 991339128 from the Numbermatics database.
Names of 991339128
- Cardinal: 991339128 can be written as Nine hundred ninety-one million, three hundred thirty-nine thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 9.91339128 × 108
Factors of 991339128
Divisors of 991339128
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 8 9 12 13 18 24 26 27 36 39 52 54 72 78 104 108 117 156 169 216 234 312 338 351 468 507 676 702 936 1014 1352 1404 1521 2028 2089 2197 2808 3042 4056 4178 4394 4563 6084 6267 6591 8356 8788 9126 12168 12534 13182 16712 17576 18252 18801 19773 25068 26364 27157 36504 37602 39546 50136 52728 54314 56403 59319 75204 79092 81471 108628 112806 118638 150408 158184 162942 217256 225612 237276 244413 325884 353041 451224 474552 488826 651768 706082 733239 977652 1059123 1412164 1466478 1955304 2118246 2824328 2932956 3177369 4236492 4589533 5865912 6354738 8472984 9179066 9532107 12709476 13768599 18358132 19064214 25418952 27537198 36716264 38128428 41305797 55074396 76256856 82611594 110148792 123917391 165223188 247834782 330446376 495669564 991339128
- Sum of all divisors σ(n): 2984520000
- Sum of proper divisors (its aliquot sum) s(n): 1993180872
- 991339128 is an abundant number, because the sum of its proper divisors (1993180872) is greater than itself. Its abundance is 1001841744
Bases of 991339128
- Binary: 1110110001011010100010011110002
- Hexadecimal: 0x3B16A278
- Base-36: GE7U60
Squares and roots of 991339128
- 991339128 squared (9913391282) is 982753266703800384
- 991339128 cubed (9913391283) is 974241766453296906960625152
-
The
square root of 991339128 is 31485.5383946345 -
The
cube root of 991339128 is 997.1046678085
Scales and comparisons
How big is 991339128?- 991,339,128 seconds is equal to 31 years, 27 weeks, 19 hours, 58 minutes, 48 seconds.
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To count from 1 to 991,339,128 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 991339128 cubic inches would be around 83.1 feet tall.
Recreational maths with 991339128
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