128117920
128,117,920 is an even composite number composed of five prime numbers multiplied together.
128117920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 128117920:
25 × 5 × 7 × 73 × 1567
(2 × 2 × 2 × 2 × 2 × 5 × 7 × 73 × 1567)See below for interesting mathematical facts about the number 128117920 from the Numbermatics database.
Names of 128117920
- Cardinal: 128117920 can be written as One hundred twenty-eight million, one hundred seventeen thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.2811792 × 108
Factors of 128117920
Divisors of 128117920
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 73 80 112 140 146 160 224 280 292 365 511 560 584 730 1022 1120 1168 1460 1567 2044 2336 2555 2920 3134 4088 5110 5840 6268 7835 8176 10220 10969 11680 12536 15670 16352 20440 21938 25072 31340 40880 43876 50144 54845 62680 81760 87752 109690 114391 125360 175504 219380 228782 250720 351008 438760 457564 571955 800737 877520 915128 1143910 1601474 1755040 1830256 2287820 3202948 3660512 4003685 4575640 6405896 8007370 9151280 12811792 16014740 18302560 25623584 32029480 64058960 128117920
- Sum of all divisors σ(n): 350880768
- Sum of proper divisors (its aliquot sum) s(n): 222762848
- 128117920 is an abundant number, because the sum of its proper divisors (222762848) is greater than itself. Its abundance is 94644928
Bases of 128117920
- Binary: 1111010001011101100101000002
- Hexadecimal: 0x7A2ECA0
- Base-36: 24A0F4
Squares and roots of 128117920
- 128117920 squared (1281179202) is 16414201425126400
- 128117920 cubed (1281179203) is 2102953345048230105088000
-
The
square root of 128117920 is 11318.9186762693 -
The
cube root of 128117920 is 504.1231327603
Scales and comparisons
How big is 128117920?- 128,117,920 seconds is equal to 4 years, 3 weeks, 5 days, 20 hours, 18 minutes, 40 seconds.
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To count from 1 to 128,117,920 would take you about six 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 128117920 cubic inches would be around 42 feet tall.
Recreational maths with 128117920
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