31386420
31,386,420 is an even composite number composed of six prime numbers multiplied together.
31386420 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 31386420:
22 × 33 × 5 × 13 × 17 × 263
(2 × 2 × 3 × 3 × 3 × 5 × 13 × 17 × 263)See below for interesting mathematical facts about the number 31386420 from the Numbermatics database.
Names of 31386420
- Cardinal: 31386420 can be written as Thirty-one million, three hundred eighty-six thousand, four hundred twenty.
Scientific notation
- Scientific notation: 3.138642 × 107
Factors of 31386420
Divisors of 31386420
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 13 15 17 18 20 26 27 30 34 36 39 45 51 52 54 60 65 68 78 85 90 102 108 117 130 135 153 156 170 180 195 204 221 234 255 260 263 270 306 340 351 390 442 459 468 510 526 540 585 612 663 702 765 780 789 884 918 1020 1052 1105 1170 1315 1326 1404 1530 1578 1755 1836 1989 2210 2295 2340 2367 2630 2652 3060 3156 3315 3419 3510 3945 3978 4420 4471 4590 4734 5260 5967 6630 6838 7020 7101 7890 7956 8942 9180 9468 9945 10257 11835 11934 13260 13413 13676 14202 15780 17095 17884 19890 20514 22355 23670 23868 26826 28404 29835 30771 34190 35505 39780 40239 41028 44710 47340 51285 53652 58123 59670 61542 67065 68380 71010 80478 89420 92313 102570 116246 119340 120717 123084 134130 142020 153855 160956 174369 184626 201195 205140 232492 241434 268260 290615 307710 348738 369252 402390 461565 482868 523107 581230 603585 615420 697476 804780 871845 923130 1046214 1162460 1207170 1569321 1743690 1846260 2092428 2414340 2615535 3138642 3487380 5231070 6277284 7846605 10462140 15693210 31386420
- Sum of all divisors σ(n): 111767040
- Sum of proper divisors (its aliquot sum) s(n): 80380620
- 31386420 is an abundant number, because the sum of its proper divisors (80380620) is greater than itself. Its abundance is 48994200
Bases of 31386420
- Binary: 11101111011101011001101002
- Hexadecimal: 0x1DEEB34
- Base-36: IOPX0
Squares and roots of 31386420
- 31386420 squared (313864202) is 985107360416400
- 31386420 cubed (313864203) is 30918993359120505288000
-
The
square root of 31386420 is 5602.3584319463 -
The
cube root of 31386420 is 315.4379396101
Scales and comparisons
How big is 31386420?- 31,386,420 seconds is equal to 51 weeks, 6 days, 6 hours, 27 minutes.
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To count from 1 to 31,386,420 would take you about twenty-five weeks!
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 31386420 cubic inches would be around 26.3 feet tall.
Recreational maths with 31386420
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