21018224640
21,018,224,640 is an even composite number composed of five prime numbers multiplied together.
21018224640 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21018224640:
211 × 3 × 5 × 72 × 13963
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 7 × 7 × 13963)See below for interesting mathematical facts about the number 21018224640 from the Numbermatics database.
Names of 21018224640
- Cardinal: 21018224640 can be written as Twenty-one billion, eighteen million, two hundred twenty-four thousand, six hundred forty.
Scientific notation
- Scientific notation: 2.101822464 × 1010
Factors of 21018224640
Divisors of 21018224640
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 49 56 60 64 70 80 84 96 98 105 112 120 128 140 147 160 168 192 196 210 224 240 245 256 280 294 320 336 384 392 420 448 480 490 512 560 588 640 672 735 768 784 840 896 960 980 1024 1120 1176 1280 1344 1470 1536 1568 1680 1792 1920 1960 2048 2240 2352 2560 2688 2940 3072 3136 3360 3584 3840 3920 4480 4704 5120 5376 5880 6144 6272 6720 7168 7680 7840 8960 9408 10240 10752 11760 12544 13440 13963 14336 15360 15680 17920 18816 21504 23520 25088 26880 27926 30720 31360 35840 37632 41889 43008 47040 50176 53760 55852 62720 69815 71680 75264 83778 94080 97741 100352 107520 111704 125440 139630 150528 167556 188160 195482 209445 215040 223408 250880 279260 293223 301056 335112 376320 390964 418890 446816 488705 501760 558520 586446 670224 684187 752640 781928 837780 893632 977410 1117040 1172892 1340448 1368374 1466115 1505280 1563856 1675560 1787264 1954820 2052561 2234080 2345784 2680896 2736748 2932230 3127712 3351120 3420935 3574528 3909640 4105122 4468160 4691568 5361792 5473496 5864460 6255424 6702240 6841870 7149056 7819280 8210244 8936320 9383136 10262805 10723584 10946992 11728920 12510848 13404480 13683740 14298112 15638560 16420488 17872640 18766272 20525610 21447168 21893984 23457840 25021696 26808960 27367480 28596224 31277120 32840976 35745280 37532544 41051220 42894336 43787968 46915680 50043392 53617920 54734960 62554240 65681952 71490560 75065088 82102440 85788672 87575936 93831360 100086784 107235840 109469920 125108480 131363904 142981120 150130176 164204880 175151872 187662720 200173568 214471680 218939840 250216960 262727808 300260352 328409760 350303744 375325440 428943360 437879680 500433920 525455616 600520704 656819520 700607488 750650880 875759360 1000867840 1050911232 1313639040 1401214976 1501301760 1751518720 2101822464 2627278080 3002603520 3503037440 4203644928 5254556160 7006074880 10509112320 21018224640
- Sum of all divisors σ(n): 78225769440
- Sum of proper divisors (its aliquot sum) s(n): 57207544800
- 21018224640 is an abundant number, because the sum of its proper divisors (57207544800) is greater than itself. Its abundance is 36189320160
Bases of 21018224640
- Binary: 100111001001100100010101000000000002
- Hexadecimal: 0x4E4C8A800
- Base-36: 9NLPHXC
Squares and roots of 21018224640
- 21018224640 squared (210182246402) is 441765767017503129600
- 21018224640 cubed (210182246403) is 9285132129435783589835833344000
-
The
square root of 21018224640 is 144976.6348071301 -
The
cube root of 21018224640 is 2759.7220472033
Scales and comparisons
How big is 21018224640?- 21,018,224,640 seconds is equal to 668 years, 16 weeks, 2 days, 11 hours, 44 minutes.
-
To count from 1 to 21,018,224,640 would take you about one thousand, three hundred thirty-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 21018224640 cubic inches would be around 230 feet tall.
Recreational maths with 21018224640
- 21018224640 backwards is 04642281012
- 21018224640 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21018224640's digits is 30
- More coming soon!
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