21057481440
21,057,481,440 is an even composite number composed of six prime numbers multiplied together.
21057481440 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21057481440:
25 × 33 × 5 × 37 × 47 × 2803
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 5 × 37 × 47 × 2803)See below for interesting mathematical facts about the number 21057481440 from the Numbermatics database.
Names of 21057481440
- Cardinal: 21057481440 can be written as Twenty-one billion, fifty-seven million, four hundred eighty-one thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.105748144 × 1010
Factors of 21057481440
Divisors of 21057481440
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 37 40 45 47 48 54 60 72 74 80 90 94 96 108 111 120 135 141 144 148 160 180 185 188 216 222 235 240 270 282 288 296 333 360 370 376 423 432 444 470 480 540 555 564 592 666 705 720 740 752 846 864 888 940 999 1080 1110 1128 1184 1269 1332 1410 1440 1480 1504 1665 1692 1739 1776 1880 1998 2115 2160 2220 2256 2538 2664 2803 2820 2960 3330 3384 3478 3552 3760 3996 4230 4320 4440 4512 4995 5076 5217 5328 5606 5640 5920 6345 6660 6768 6956 7520 7992 8409 8460 8695 8880 9990 10152 10434 10656 11212 11280 12690 13320 13536 13912 14015 15651 15984 16818 16920 17390 17760 19980 20304 20868 22424 22560 25227 25380 26085 26640 27824 28030 31302 31968 33636 33840 34780 39960 40608 41736 42045 44848 46953 50454 50760 52170 53280 55648 56060 62604 67272 67680 69560 75681 78255 79920 83472 84090 89696 93906 100908 101520 103711 104340 112120 125208 126135 131741 134544 139120 151362 156510 159840 166944 168180 187812 201816 203040 207422 208680 224240 234765 250416 252270 263482 269088 278240 302724 311133 313020 336360 375624 378405 395223 403632 414844 417360 448480 469530 500832 504540 518555 526964 605448 622266 626040 658705 672720 751248 756810 790446 807264 829688 834720 933399 939060 1009080 1037110 1053928 1185669 1210896 1244532 1252080 1317410 1345440 1502496 1513620 1555665 1580892 1659376 1866798 1878120 1976115 2018160 2074220 2107856 2371338 2421792 2489064 2504160 2634820 2800197 3027240 3111330 3161784 3318752 3557007 3733596 3756240 3952230 4036320 4148440 4215712 4666995 4742676 4874417 4978128 5269640 5600394 5928345 6054480 6222660 6323568 7114014 7467192 7512480 7904460 8296880 9333990 9485352 9748834 9956256 10539280 11200788 11856690 12108960 12445320 12647136 14000985 14228028 14623251 14934384 15808920 16593760 17785035 18667980 18970704 19497668 21078560 22401576 23713380 24372085 24890640 28001970 28456056 29246502 29868768 31617840 35570070 37335960 37941408 38995336 43869753 44803152 47426760 48744170 49781280 56003940 56912112 58493004 63235680 71140140 73116255 74671920 77990672 87739506 89606304 94853520 97488340 112007880 113824224 116986008 131609259 142280280 146232510 149343840 155981344 175479012 189707040 194976680 219348765 224015760 233972016 263218518 284560560 292465020 350958024 389953360 438697530 448031520 467944032 526437036 569121120 584930040 658046295 701916048 779906720 877395060 1052874072 1169860080 1316092590 1403832096 1754790120 2105748144 2339720160 2632185180 3509580240 4211496288 5264370360 7019160480 10528740720 21057481440
- Sum of all divisors σ(n): 77331179520
- Sum of proper divisors (its aliquot sum) s(n): 56273698080
- 21057481440 is an abundant number, because the sum of its proper divisors (56273698080) is greater than itself. Its abundance is 35216216640
Bases of 21057481440
- Binary: 100111001110001111110101010111000002
- Hexadecimal: 0x4E71FAAE0
- Base-36: 9O92WO0
Squares and roots of 21057481440
- 21057481440 squared (210574814402) is 443417524595944473600
- 21057481440 cubed (210574814403) is 9337256294349844252102569984000
-
The
square root of 21057481440 is 145111.9617398925 -
The
cube root of 21057481440 is 2761.4391360451
Scales and comparisons
How big is 21057481440?- 21,057,481,440 seconds is equal to 669 years, 29 weeks, 1 day, 20 hours, 24 minutes.
-
To count from 1 to 21,057,481,440 would take you about one thousand, three hundred thirty-nine 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 21057481440 cubic inches would be around 230.1 feet tall.
Recreational maths with 21057481440
- 21057481440 backwards is 04418475012
- 21057481440 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21057481440's digits is 36
- More coming soon!
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