13878720
13,878,720 is an even composite number composed of five prime numbers multiplied together.
13878720 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 13878720:
26 × 32 × 5 × 61 × 79
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 61 × 79)See below for interesting mathematical facts about the number 13878720 from the Numbermatics database.
Names of 13878720
- Cardinal: 13878720 can be written as Thirteen million, eight hundred seventy-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.387872 × 107
Factors of 13878720
Divisors of 13878720
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 61 64 72 79 80 90 96 120 122 144 158 160 180 183 192 237 240 244 288 305 316 320 360 366 395 474 480 488 549 576 610 632 711 720 732 790 915 948 960 976 1098 1185 1220 1264 1422 1440 1464 1580 1830 1896 1952 2196 2370 2440 2528 2745 2844 2880 2928 3160 3555 3660 3792 3904 4392 4740 4819 4880 5056 5490 5688 5856 6320 7110 7320 7584 8784 9480 9638 9760 10980 11376 11712 12640 14220 14457 14640 15168 17568 18960 19276 19520 21960 22752 24095 25280 28440 28914 29280 35136 37920 38552 43371 43920 45504 48190 56880 57828 58560 72285 75840 77104 86742 87840 96380 113760 115656 144570 154208 173484 175680 192760 216855 227520 231312 289140 308416 346968 385520 433710 462624 578280 693936 771040 867420 925248 1156560 1387872 1542080 1734840 2313120 2775744 3469680 4626240 6939360 13878720
- Sum of all divisors σ(n): 49133760
- Sum of proper divisors (its aliquot sum) s(n): 35255040
- 13878720 is an abundant number, because the sum of its proper divisors (35255040) is greater than itself. Its abundance is 21376320
Bases of 13878720
- Binary: 1101001111000101110000002
- Hexadecimal: 0xD3C5C0
- Base-36: 89GW0
Squares and roots of 13878720
- 13878720 squared (138787202) is 192618868838400
- 13878720 cubed (138787203) is 2673303347324878848000
-
The
square root of 13878720 is 3725.4154130783 -
The
cube root of 13878720 is 240.3162497591
Scales and comparisons
How big is 13878720?- 13,878,720 seconds is equal to 22 weeks, 6 days, 15 hours, 12 minutes.
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To count from 1 to 13,878,720 would take you about thirty-four 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 13878720 cubic inches would be around 20 feet tall.
Recreational maths with 13878720
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