21555449344
21,555,449,344 is an even composite number composed of six prime numbers multiplied together.
21555449344 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 21555449344:
29 × 11 × 13 × 37 × 73 × 109
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 11 × 13 × 37 × 73 × 109)See below for interesting mathematical facts about the number 21555449344 from the Numbermatics database.
Names of 21555449344
- Cardinal: 21555449344 can be written as Twenty-one billion, five hundred fifty-five million, four hundred forty-nine thousand, three hundred forty-four.
Scientific notation
- Scientific notation: 2.1555449344 × 1010
Factors of 21555449344
Divisors of 21555449344
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 4 8 11 13 16 22 26 32 37 44 52 64 73 74 88 104 109 128 143 146 148 176 208 218 256 286 292 296 352 407 416 436 481 512 572 584 592 704 803 814 832 872 949 962 1144 1168 1184 1199 1408 1417 1606 1628 1664 1744 1898 1924 2288 2336 2368 2398 2701 2816 2834 3212 3256 3328 3488 3796 3848 4033 4576 4672 4736 4796 5291 5402 5632 5668 6424 6512 6656 6976 7592 7696 7957 8066 9152 9344 9472 9592 10439 10582 10804 11336 12848 13024 13952 15184 15392 15587 15914 16132 18304 18688 18944 19184 20878 21164 21608 22672 25696 26048 27904 29711 30368 30784 31174 31828 32264 35113 36608 37376 38368 41756 42328 43216 44363 45344 51392 52096 52429 55808 59422 60736 61568 62348 63656 64528 70226 73216 76736 83512 84656 86432 87527 88726 90688 102784 103441 104192 104858 118844 121472 123136 124696 127312 129056 140452 153472 167024 169312 172864 175054 177452 181376 205568 206882 208384 209716 237688 242944 246272 249392 254624 258112 280904 294409 306944 334048 338624 345728 350108 354904 362752 386243 411136 413764 419432 475376 485888 498784 509248 516224 561808 576719 588818 613888 668096 677248 691456 700216 709808 725504 772486 827528 838864 950752 997568 1018496 1032448 1123616 1137851 1153438 1177636 1336192 1354496 1382912 1400432 1419616 1544972 1655056 1677728 1901504 1995136 2036992 2064896 2247232 2275702 2306876 2355272 2672384 2708992 2800864 2839232 3089944 3238499 3310112 3355456 3803008 3827317 3990272 4073984 4494464 4551404 4613752 4710544 5344768 5601728 5678464 6179888 6476998 6620224 6710912 7606016 7654634 7980544 8988928 9102808 9227504 9421088 11203456 11356928 12359776 12953996 13240448 13421824 15212032 15309268 17977856 18205616 18455008 18842176 22406912 22713856 24719552 25907992 26480896 26843648 30618536 36411232 36910016 37684352 42100487 44813824 49439104 51815984 52961792 61237072 72822464 73820032 75368704 84200974 98878208 103631968 122474144 145644928 147640064 150737408 168401948 197756416 207263936 244948288 291289856 295280128 336803896 414527872 489896576 582579712 673607792 829055744 979793152 1347215584 1658111488 1959586304 2694431168 5388862336 10777724672 21555449344
- Sum of all divisors σ(n): 53160972480
- Sum of proper divisors (its aliquot sum) s(n): 31605523136
- 21555449344 is an abundant number, because the sum of its proper divisors (31605523136) is greater than itself. Its abundance is 10050073792
Bases of 21555449344
- Binary: 101000001001100111000001110000000002
- Hexadecimal: 0x504CE0E00
- Base-36: 9WHK35S
Squares and roots of 21555449344
- 21555449344 squared (215554493442) is 464637396421750030336
- 21555449344 cubed (215554493443) is 10015467861897079638738111299584
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The
square root of 21555449344 is 146817.7419251503 -
The
cube root of 21555449344 is 2783.0372987057
Scales and comparisons
How big is 21555449344?- 21,555,449,344 seconds is equal to 685 years, 20 weeks, 4 days, 8 hours, 49 minutes, 4 seconds.
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To count from 1 to 21,555,449,344 would take you about one thousand, three hundred seventy 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 21555449344 cubic inches would be around 231.9 feet tall.
Recreational maths with 21555449344
- 21555449344 backwards is 44394455512
- The number of decimal digits it has is: 11
- The sum of 21555449344's digits is 46
- More coming soon!
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