21390305040
21,390,305,040 is an even composite number composed of six prime numbers multiplied together.
21390305040 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of four hundred divisors.
Prime factorization of 21390305040:
24 × 34 × 5 × 13 × 31 × 8191
(2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 13 × 31 × 8191)See below for interesting mathematical facts about the number 21390305040 from the Numbermatics database.
Names of 21390305040
- Cardinal: 21390305040 can be written as Twenty-one billion, three hundred ninety million, three hundred five thousand and forty.
Scientific notation
- Scientific notation: 2.139030504 × 1010
Factors of 21390305040
Divisors of 21390305040
- Number of divisors d(n): 400
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 31 36 39 40 45 48 52 54 60 62 65 72 78 80 81 90 93 104 108 117 120 124 130 135 144 155 156 162 180 186 195 208 216 234 240 248 260 270 279 310 312 324 351 360 372 390 403 405 432 465 468 496 520 540 558 585 620 624 648 702 720 744 780 806 810 837 930 936 1040 1053 1080 1116 1170 1209 1240 1296 1395 1404 1488 1560 1612 1620 1674 1755 1860 1872 2015 2106 2160 2232 2340 2418 2480 2511 2790 2808 3120 3224 3240 3348 3510 3627 3720 4030 4185 4212 4464 4680 4836 5022 5265 5580 5616 6045 6448 6480 6696 7020 7254 7440 8060 8191 8370 8424 9360 9672 10044 10530 10881 11160 12090 12555 13392 14040 14508 16120 16382 16740 16848 18135 19344 20088 21060 21762 22320 24180 24573 25110 28080 29016 32240 32643 32764 33480 36270 40176 40955 42120 43524 48360 49146 50220 54405 58032 65286 65528 66960 72540 73719 81910 84240 87048 96720 98292 100440 106483 108810 122865 130572 131056 145080 147438 163215 163820 174096 196584 200880 212966 217620 221157 245730 253921 261144 290160 294876 319449 326430 327640 368595 393168 425932 435240 442314 491460 507842 522288 532415 589752 638898 652860 655280 663471 737190 761763 851864 870480 884628 958347 982920 1015684 1064830 1105785 1179504 1269605 1277796 1305720 1326942 1474380 1523526 1597245 1703728 1769256 1916694 1965840 2031368 2129660 2211570 2285289 2539210 2555592 2611440 2653884 2875041 2948760 3047052 3194490 3300973 3317355 3538512 3808815 3833388 4062736 4259320 4423140 4570578 4791735 5078420 5111184 5307768 5750082 5897520 6094104 6388980 6601946 6634710 6855867 7617630 7666776 8518640 8625123 8846280 9141156 9583470 9902919 10156840 10615536 11426445 11500164 12188208 12777960 13203892 13269420 13711734 14375205 15235260 15333552 16504865 17250246 17692560 18282312 19166940 19805838 20313680 20567601 22852890 23000328 25555920 26407784 26538840 27423468 28750410 29708757 30470520 33009730 34279335 34500492 36564624 38333880 39611676 41135202 43125615 45705780 46000656 49514595 52815568 53077680 54846936 57500820 59417514 60941040 66019460 68558670 69000984 76667760 79223352 82270404 86251230 89126271 91411560 99029190 102838005 109693872 115001640 118835028 132038920 137117340 138001968 148543785 158446704 164540808 172502460 178252542 182823120 198058380 205676010 230003280 237670056 264077840 267378813 274234680 297087570 329081616 345004920 356505084 396116760 411352020 445631355 475340112 534757626 548469360 594175140 690009840 713010168 792233520 822704040 891262710 1069515252 1188350280 1336894065 1426020336 1645408080 1782525420 2139030504 2376700560 2673788130 3565050840 4278061008 5347576260 7130101680 10695152520 21390305040
- Sum of all divisors σ(n): 82597380096
- Sum of proper divisors (its aliquot sum) s(n): 61207075056
- 21390305040 is an abundant number, because the sum of its proper divisors (61207075056) is greater than itself. Its abundance is 39816770016
Bases of 21390305040
- Binary: 100111110101111011000100111000100002
- Hexadecimal: 0x4FAF62710
- Base-36: 9TR8H00
Squares and roots of 21390305040
- 21390305040 squared (213903050402) is 457545149704249401600
- 21390305040 cubed (213903050403) is 9787030321746360484461464064000
-
The
square root of 21390305040 is 146254.2479383077 -
The
cube root of 21390305040 is 2775.9117763543
Scales and comparisons
How big is 21390305040?- 21,390,305,040 seconds is equal to 680 years, 7 weeks, 3 days, 23 hours, 24 minutes.
-
To count from 1 to 21,390,305,040 would take you about one thousand, three hundred sixty 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 21390305040 cubic inches would be around 231.3 feet tall.
Recreational maths with 21390305040
- 21390305040 backwards is 04050309312
- 21390305040 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21390305040's digits is 27
- More coming soon!
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