28440720
28,440,720 is an even composite number composed of six prime numbers multiplied together.
What does the number 28440720 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 480 divisors.
28440720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of four hundred eighty divisors.
Prime factorization of 28440720:
24 × 35 × 5 × 7 × 11 × 19
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 5 × 7 × 11 × 19)See below for interesting mathematical facts about the number 28440720 from the Numbermatics database.
Names of 28440720
- Cardinal: 28440720 can be written as Twenty-eight million, four hundred forty thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.844072 × 107
Factors of 28440720
Divisors of 28440720
- Number of divisors d(n): 480
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Complete list of divisors:
1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 18 19 20 21 22 24 27 28 30 33 35 36 38 40 42 44 45 48 54 55 56 57 60 63 66 70 72 76 77 80 81 84 88 90 95 99 105 108 110 112 114 120 126 132 133 135 140 144 152 154 162 165 168 171 176 180 189 190 198 209 210 216 220 228 231 240 243 252 264 266 270 280 285 297 304 308 315 324 330 336 342 360 378 380 385 396 399 405 418 420 432 440 456 462 486 495 504 513 528 532 540 560 567 570 594 616 627 630 648 660 665 684 693 720 756 760 770 792 798 810 836 840 855 880 891 912 924 945 972 990 1008 1026 1045 1064 1080 1134 1140 1155 1188 1197 1215 1232 1254 1260 1296 1320 1330 1368 1386 1463 1485 1512 1520 1539 1540 1584 1596 1620 1672 1680 1701 1710 1782 1848 1881 1890 1944 1980 1995 2052 2079 2090 2128 2160 2268 2280 2310 2376 2394 2430 2508 2520 2565 2640 2660 2673 2736 2772 2835 2926 2970 3024 3078 3080 3135 3192 3240 3344 3402 3420 3465 3564 3591 3696 3762 3780 3888 3960 3990 4104 4158 4180 4389 4455 4536 4560 4617 4620 4752 4788 4860 5016 5040 5130 5320 5346 5544 5643 5670 5852 5940 5985 6156 6160 6237 6270 6384 6480 6804 6840 6930 7128 7182 7315 7524 7560 7695 7920 7980 8208 8316 8360 8505 8778 8910 9072 9234 9240 9405 9576 9720 10032 10260 10395 10640 10692 10773 11088 11286 11340 11704 11880 11970 12312 12474 12540 13167 13365 13608 13680 13860 14256 14364 14630 15048 15120 15390 15960 16632 16720 16929 17010 17556 17820 17955 18468 18480 18711 18810 19152 19440 20520 20790 21384 21546 21945 22572 22680 23085 23408 23760 23940 24624 24948 25080 26334 26730 27216 27720 28215 28728 29260 30096 30780 31185 31920 32319 33264 33858 34020 35112 35640 35910 36936 37422 37620 39501 41040 41580 42768 43092 43890 45144 45360 46170 47880 49896 50160 50787 52668 53460 53865 55440 56430 57456 58520 61560 62370 64638 65835 67716 68040 70224 71280 71820 73872 74844 75240 79002 83160 84645 86184 87780 90288 92340 93555 95760 99792 101574 105336 106920 107730 112860 117040 118503 123120 124740 129276 131670 135432 136080 143640 149688 150480 158004 161595 166320 169290 172368 175560 184680 187110 197505 203148 210672 213840 215460 225720 237006 249480 253935 258552 263340 270864 287280 299376 316008 323190 338580 351120 355509 369360 374220 395010 406296 430920 451440 474012 498960 507870 517104 526680 592515 632016 646380 677160 711018 748440 790020 812592 861840 948024 1015740 1053360 1185030 1292760 1354320 1422036 1496880 1580040 1777545 1896048 2031480 2370060 2585520 2844072 3160080 3555090 4062960 4740120 5688144 7110180 9480240 14220360 28440720
- Sum of all divisors σ(n): 129991680
- Sum of proper divisors (its aliquot sum) s(n): 101550960
- 28440720 is an abundant number, because the sum of its proper divisors (101550960) is greater than itself. Its abundance is 73110240
Bases of 28440720
- Binary: 11011000111111000100100002
- Hexadecimal: 0x1B1F890
- Base-36: GXL00
Squares and roots of 28440720
- 28440720 squared (284407202) is 808874554118400
- 28440720 cubed (284407203) is 23004974708806261248000
-
The
square root of 28440720 is 5332.9841552361 -
The
cube root of 28440720 is 305.2438075641
Scales and comparisons
How big is 28440720?- 28,440,720 seconds is equal to 47 weeks, 4 hours, 12 minutes.
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To count from 1 to 28,440,720 would take you about eighteen 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 28440720 cubic inches would be around 25.4 feet tall.
Recreational maths with 28440720
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