21105139440
21,105,139,440 is an even composite number composed of six prime numbers multiplied together.
21105139440 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 21105139440:
24 × 3 × 5 × 7 × 112 × 473
(2 × 2 × 2 × 2 × 3 × 5 × 7 × 11 × 11 × 47 × 47 × 47)See below for interesting mathematical facts about the number 21105139440 from the Numbermatics database.
Names of 21105139440
- Cardinal: 21105139440 can be written as Twenty-one billion, one hundred five million, one hundred thirty-nine thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.110513944 × 1010
Factors of 21105139440
Divisors of 21105139440
- Number of divisors d(n): 480
-
Complete list of divisors:
1 2 3 4 5 6 7 8 10 11 12 14 15 16 20 21 22 24 28 30 33 35 40 42 44 47 48 55 56 60 66 70 77 80 84 88 94 105 110 112 120 121 132 140 141 154 165 168 176 188 210 220 231 235 240 242 264 280 282 308 329 330 336 363 376 385 420 440 462 470 484 517 528 560 564 605 616 658 660 705 726 752 770 840 847 880 924 940 968 987 1034 1128 1155 1210 1232 1316 1320 1410 1452 1540 1551 1645 1680 1694 1815 1848 1880 1936 1974 2068 2209 2256 2310 2420 2541 2585 2632 2640 2820 2904 3080 3102 3290 3388 3619 3630 3696 3760 3948 4136 4235 4418 4620 4840 4935 5082 5170 5264 5640 5687 5808 6160 6204 6580 6627 6776 7238 7260 7755 7896 8272 8470 8836 9240 9680 9870 10164 10340 10857 11045 11280 11374 12408 12705 13160 13254 13552 14476 14520 15463 15510 15792 16940 17061 17672 18095 18480 19740 20328 20680 21714 22090 22748 24299 24816 25410 26320 26508 28435 28952 29040 30926 31020 33135 33880 34122 35344 36190 39480 39809 40656 41360 43428 44180 45496 46389 48598 50820 53016 54285 56870 57904 61852 62040 66270 67760 68244 72380 72897 77315 78960 79618 85305 86856 88360 90992 92778 97196 101640 103823 106032 108570 113740 119427 121495 123704 124080 132540 136488 144760 145794 154630 159236 170093 170610 173712 176720 185556 194392 199045 203280 207646 217140 227480 231945 238854 242990 247408 265080 267289 272976 289520 291588 309260 311469 318472 340186 341220 364485 371112 388784 398090 415292 434280 454960 463890 477708 485980 510279 519115 530160 534578 583176 597135 618520 622938 636944 680372 682440 726761 728970 742224 796180 801867 830584 850465 868560 927780 955416 971960 1020558 1038230 1069156 1142053 1166352 1194270 1237040 1245876 1336445 1360744 1364880 1453522 1457940 1557345 1592360 1603734 1661168 1700930 1855560 1871023 1910832 1943920 2041116 2076460 2138312 2180283 2284106 2388540 2491752 2551395 2672890 2721488 2907044 2915880 3114690 3184720 3207468 3401860 3426159 3633805 3711120 3742046 4009335 4082232 4152920 4276624 4360566 4568212 4777080 4983504 5102790 5345780 5613069 5710265 5814088 5831760 6229380 6414936 6803720 6852318 7267610 7484092 7994371 8018670 8164464 8305840 8721132 9136424 9355115 9554160 10205580 10691560 10901415 11226138 11420530 11628176 12458760 12562583 12829872 13607440 13704636 14535220 14968184 15988742 16037340 17130795 17442264 18272848 18710230 20411160 21383120 21802830 22452276 22841060 23983113 24917520 25125166 27409272 28065345 29070440 29936368 31977484 32074680 34261590 34884528 37420460 37687749 39971855 40822320 43605660 44904552 45682120 47966226 50250332 54818544 56130690 58140880 62812915 63954968 64149360 68523180 74840920 75375498 79943710 87211320 87938081 89809104 91364240 95932452 100500664 112261380 119915565 125625830 127909936 137046360 149681840 150750996 159887420 174422640 175876162 188438745 191864904 201001328 224522760 239831130 251251660 263814243 274092720 301501992 319774840 351752324 376877490 383729808 439690405 449045520 479662260 502503320 527628486 603003984 639549680 703504648 753754980 879380810 959324520 1005006640 1055256972 1319071215 1407009296 1507509960 1758761620 1918649040 2110513944 2638142430 3015019920 3517523240 4221027888 5276284860 7035046480 10552569720 21105139440
- Sum of all divisors σ(n): 83974625280
- Sum of proper divisors (its aliquot sum) s(n): 62869485840
- 21105139440 is an abundant number, because the sum of its proper divisors (62869485840) is greater than itself. Its abundance is 41764346400
Bases of 21105139440
- Binary: 100111010011111011011011110111100002
- Hexadecimal: 0x4E9F6DEF0
- Base-36: 9P1GDTC
Squares and roots of 21105139440
- 21105139440 squared (211051394402) is 445426910781843513600
- 21105139440 cubed (211051394403) is 9400797062379246774787536384000
-
The
square root of 21105139440 is 145276.0800682617 -
The
cube root of 21105139440 is 2763.5208270159
Scales and comparisons
How big is 21105139440?- 21,105,139,440 seconds is equal to 671 years, 4 weeks, 10 hours, 44 minutes.
-
To count from 1 to 21,105,139,440 would take you about one thousand, three hundred forty-two 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 21105139440 cubic inches would be around 230.3 feet tall.
Recreational maths with 21105139440
- 21105139440 backwards is 04493150112
- 21105139440 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21105139440's digits is 30
- More coming soon!
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