990386640
990,386,640 is an even composite number composed of five prime numbers multiplied together.
990386640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty divisors.
Prime factorization of 990386640:
24 × 32 × 5 × 127 × 10831
(2 × 2 × 2 × 2 × 3 × 3 × 5 × 127 × 10831)See below for interesting mathematical facts about the number 990386640 from the Numbermatics database.
Names of 990386640
- Cardinal: 990386640 can be written as Nine hundred ninety million, three hundred eighty-six thousand, six hundred forty.
Scientific notation
- Scientific notation: 9.9038664 × 108
Factors of 990386640
Divisors of 990386640
- Number of divisors d(n): 120
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 127 144 180 240 254 360 381 508 635 720 762 1016 1143 1270 1524 1905 2032 2286 2540 3048 3810 4572 5080 5715 6096 7620 9144 10160 10831 11430 15240 18288 21662 22860 30480 32493 43324 45720 54155 64986 86648 91440 97479 108310 129972 162465 173296 194958 216620 259944 324930 389916 433240 487395 519888 649860 779832 866480 974790 1299720 1375537 1559664 1949580 2599440 2751074 3899160 4126611 5502148 6877685 7798320 8253222 11004296 12379833 13755370 16506444 20633055 22008592 24759666 27510740 33012888 41266110 49519332 55021480 61899165 66025776 82532220 99038664 110042960 123798330 165064440 198077328 247596660 330128880 495193320 990386640
- Sum of all divisors σ(n): 3352547328
- Sum of proper divisors (its aliquot sum) s(n): 2362160688
- 990386640 is an abundant number, because the sum of its proper divisors (2362160688) is greater than itself. Its abundance is 1371774048
Bases of 990386640
- Binary: 1110110000100000011001110100002
- Hexadecimal: 0x3B0819D0
- Base-36: GDNF80
Squares and roots of 990386640
- 990386640 squared (9903866402) is 980865696690489600
- 990386640 cubed (9903866403) is 971436281636553114898944000
-
The
square root of 990386640 is 31470.4089582579 -
The
cube root of 990386640 is 996.7852229497
Scales and comparisons
How big is 990386640?- 990,386,640 seconds is equal to 31 years, 25 weeks, 3 days, 19 hours, 24 minutes.
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To count from 1 to 990,386,640 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 990386640 cubic inches would be around 83.1 feet tall.
Recreational maths with 990386640
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