21180120720
21,180,120,720 is an even composite number composed of seven prime numbers multiplied together.
21180120720 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of four hundred eighty divisors.
Prime factorization of 21180120720:
24 × 3 × 5 × 112 × 73 × 97 × 103
(2 × 2 × 2 × 2 × 3 × 5 × 11 × 11 × 73 × 97 × 103)See below for interesting mathematical facts about the number 21180120720 from the Numbermatics database.
Names of 21180120720
- Cardinal: 21180120720 can be written as Twenty-one billion, one hundred eighty million, one hundred twenty thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.118012072 × 1010
Factors of 21180120720
Divisors of 21180120720
- Number of divisors d(n): 480
-
Complete list of divisors:
1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 33 40 44 48 55 60 66 73 80 88 97 103 110 120 121 132 146 165 176 194 206 219 220 240 242 264 291 292 309 330 363 365 388 412 438 440 484 485 515 528 582 584 605 618 660 726 730 776 803 824 876 880 968 970 1030 1067 1095 1133 1164 1168 1210 1236 1320 1452 1455 1460 1545 1552 1606 1648 1752 1815 1936 1940 2060 2134 2190 2266 2328 2409 2420 2472 2640 2904 2910 2920 3090 3201 3212 3399 3504 3630 3880 4015 4120 4268 4380 4532 4656 4818 4840 4944 5335 5665 5808 5820 5840 6180 6402 6424 6798 7081 7260 7519 7760 8030 8240 8536 8760 8833 9064 9636 9680 9991 10670 11330 11640 11737 12045 12360 12463 12804 12848 13596 14162 14520 15038 16005 16060 16995 17072 17520 17666 18128 19272 19982 21243 21340 22557 22660 23280 23474 24090 24720 24926 25608 26499 27192 28324 29040 29973 30076 32010 32120 33990 35211 35332 35405 37389 37595 38544 39964 42486 42680 44165 45114 45320 46948 48180 49852 49955 51216 52998 54384 56648 58685 59946 60152 62315 64020 64240 67980 70422 70664 70810 74778 75190 77891 79928 82709 84972 85360 88330 90228 90640 93896 96360 99704 99910 105996 106215 109901 112785 113296 117370 119892 120304 124630 128040 132495 135960 140844 141328 141620 149556 149865 150380 155782 159856 165418 169944 176055 176660 180456 186945 187792 192720 199408 199820 211992 212430 219802 225570 233673 234740 239784 248127 249260 256080 264990 271920 281688 283240 299112 299730 300760 311564 329703 330836 339888 352110 353320 360912 373890 389455 399640 413545 423984 424860 439604 451140 467346 469480 479568 496254 498520 529980 549505 563376 566480 598224 599460 601520 623128 659406 661672 704220 706640 729343 747780 778910 799280 827090 849720 856801 879208 902280 909799 934692 938960 992508 997040 1059960 1099010 1168365 1198920 1208911 1240635 1246256 1318812 1323344 1408440 1458686 1495560 1557820 1648515 1654180 1699440 1713602 1758416 1804560 1819598 1869384 1985016 2119920 2188029 2198020 2336730 2397840 2417822 2481270 2570403 2637624 2729397 2816880 2917372 2991120 3115640 3297030 3308360 3427204 3626733 3639196 3646715 3738768 3970032 4284005 4376058 4396040 4548995 4673460 4835644 4962540 5140806 5275248 5458794 5834744 6044555 6231280 6594060 6616720 6854408 7253466 7278392 7293430 8022773 8568010 8752116 8792080 9097990 9346920 9671288 9925080 10281612 10917588 10940145 11669488 12089110 12852015 13188120 13646985 13708816 14506932 14556784 14586860 16045546 17136020 17504232 18133665 18195980 18693840 19342576 19850160 20563224 21835176 21880290 24068319 24178220 25704030 26376240 27293970 29013864 29173720 32091092 34272040 35008464 36267330 36391960 40113865 41126448 43670352 43760580 48136638 48356440 51408060 54587940 58027728 58347440 64182184 68544080 72534660 72783920 80227730 87521160 88250503 96273276 96712880 102816120 109175880 120341595 128364368 145069320 160455460 175042320 176501006 192546552 205632240 218351760 240683190 264751509 290138640 320910920 353002012 385093104 441252515 481366380 529503018 641821840 706004024 882505030 962732760 1059006036 1323757545 1412008048 1765010060 1925465520 2118012072 2647515090 3530020120 4236024144 5295030180 7060040240 10590060360 21180120720
- Sum of all divisors σ(n): 74630390016
- Sum of proper divisors (its aliquot sum) s(n): 53450269296
- 21180120720 is an abundant number, because the sum of its proper divisors (53450269296) is greater than itself. Its abundance is 32270148576
Bases of 21180120720
- Binary: 100111011100110111011111110100100002
- Hexadecimal: 0x4EE6EFE90
- Base-36: 9QA3HQO
Squares and roots of 21180120720
- 21180120720 squared (211801207202) is 448597513713773318400
- 21180120720 cubed (211801207203) is 9501349495149574410426997248000
-
The
square root of 21180120720 is 145533.9160470851 -
The
cube root of 21180120720 is 2766.7896583121
Scales and comparisons
How big is 21180120720?- 21,180,120,720 seconds is equal to 673 years, 24 weeks, 6 hours, 52 minutes.
-
To count from 1 to 21,180,120,720 would take you about one thousand, three hundred forty-six 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 21180120720 cubic inches would be around 230.6 feet tall.
Recreational maths with 21180120720
- 21180120720 backwards is 02702108112
- 21180120720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21180120720's digits is 24
- More coming soon!
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