21329280
21,329,280 is an even composite number composed of five prime numbers multiplied together.
21329280 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21329280:
27 × 32 × 5 × 7 × 232
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 7 × 23 × 23)See below for interesting mathematical facts about the number 21329280 from the Numbermatics database.
Names of 21329280
- Cardinal: 21329280 can be written as Twenty-one million, three hundred twenty-nine thousand, two hundred eighty.
Scientific notation
- Scientific notation: 2.132928 × 107
Factors of 21329280
Divisors of 21329280
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 23 24 28 30 32 35 36 40 42 45 46 48 56 60 63 64 69 70 72 80 84 90 92 96 105 112 115 120 126 128 138 140 144 160 161 168 180 184 192 207 210 224 230 240 252 276 280 288 315 320 322 336 345 360 368 384 414 420 448 460 480 483 504 529 552 560 576 630 640 644 672 690 720 736 805 828 840 896 920 960 966 1008 1035 1058 1104 1120 1152 1260 1288 1344 1380 1440 1449 1472 1587 1610 1656 1680 1840 1920 1932 2016 2070 2116 2208 2240 2415 2520 2576 2645 2688 2760 2880 2898 2944 3174 3220 3312 3360 3680 3703 3864 4032 4140 4232 4416 4480 4761 4830 5040 5152 5290 5520 5760 5796 6348 6440 6624 6720 7245 7360 7406 7728 7935 8064 8280 8464 8832 9522 9660 10080 10304 10580 11040 11109 11592 12696 12880 13248 13440 14490 14720 14812 15456 15870 16560 16928 18515 19044 19320 20160 20608 21160 22080 22218 23184 23805 25392 25760 26496 28980 29624 30912 31740 33120 33327 33856 37030 38088 38640 40320 42320 44160 44436 46368 47610 50784 51520 55545 57960 59248 61824 63480 66240 66654 67712 74060 76176 77280 84640 88872 92736 95220 101568 103040 111090 115920 118496 126960 132480 133308 148120 152352 154560 166635 169280 177744 185472 190440 203136 222180 231840 236992 253920 266616 296240 304704 309120 333270 338560 355488 380880 444360 463680 473984 507840 533232 592480 609408 666540 710976 761760 888720 927360 1015680 1066464 1184960 1333080 1421952 1523520 1777440 2132928 2369920 2666160 3047040 3554880 4265856 5332320 7109760 10664640 21329280
- Sum of all divisors σ(n): 87993360
- Sum of proper divisors (its aliquot sum) s(n): 66664080
- 21329280 is an abundant number, because the sum of its proper divisors (66664080) is greater than itself. Its abundance is 45334800
Bases of 21329280
- Binary: 10100010101110101100000002
- Hexadecimal: 0x1457580
- Base-36: CP5S0
Squares and roots of 21329280
- 21329280 squared (213292802) is 454938185318400
- 21329280 cubed (213292803) is 9703503937348042752000
-
The
square root of 21329280 is 4618.3633464681 -
The
cube root of 21329280 is 277.3269434753
Scales and comparisons
How big is 21329280?- 21,329,280 seconds is equal to 35 weeks, 1 day, 20 hours, 48 minutes.
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To count from 1 to 21,329,280 would take you about six days!
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 21329280 cubic inches would be around 23.1 feet tall.
Recreational maths with 21329280
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The information we have on file for 21329280 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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