21288137728
21,288,137,728 is an even composite number composed of five prime numbers multiplied together.
21288137728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixty-four divisors.
Prime factorization of 21288137728:
210 × 11 × 132 × 53 × 211
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 11 × 13 × 13 × 53 × 211)See below for interesting mathematical facts about the number 21288137728 from the Numbermatics database.
Names of 21288137728
- Cardinal: 21288137728 can be written as Twenty-one billion, two hundred eighty-eight million, one hundred thirty-seven thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1288137728 × 1010
Factors of 21288137728
Divisors of 21288137728
- Number of divisors d(n): 264
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Complete list of divisors:
1 2 4 8 11 13 16 22 26 32 44 52 53 64 88 104 106 128 143 169 176 208 211 212 256 286 338 352 416 422 424 512 572 583 676 689 704 832 844 848 1024 1144 1166 1352 1378 1408 1664 1688 1696 1859 2288 2321 2332 2704 2743 2756 2816 3328 3376 3392 3718 4576 4642 4664 5408 5486 5512 5632 6656 6752 6784 7436 7579 8957 9152 9284 9328 10816 10972 11024 11183 11264 13312 13504 13568 14872 15158 17914 18304 18568 18656 21632 21944 22048 22366 27008 27136 29744 30173 30316 35659 35828 36608 37136 37312 43264 43888 44096 44732 54016 54272 59488 60346 60632 71318 71656 73216 74272 74624 86528 87776 88192 89464 98527 108032 118976 120692 121264 123013 142636 143312 145379 146432 148544 149248 173056 175552 176384 178928 197054 216064 237952 241384 242528 246026 285272 286624 290758 297088 298496 351104 352768 357856 392249 394108 475904 482768 485056 492052 570544 573248 581516 594176 596992 702208 705536 715712 784498 788216 951808 965536 970112 984104 1141088 1146496 1163032 1188352 1404416 1431424 1568996 1576432 1599169 1889927 1903616 1931072 1940224 1968208 2282176 2292992 2326064 2376704 2808832 2862848 3137992 3152864 3198338 3779854 3862144 3880448 3936416 4564352 4585984 4652128 5725696 6275984 6305728 6396676 7559708 7724288 7760896 7872832 9128704 9171968 9304256 11451392 12551968 12611456 12793352 15119416 15448576 15745664 18257408 18608512 20789197 25103936 25222912 25586704 30238832 30897152 31491328 36514816 37217024 41578394 50207872 50445824 51173408 60477664 62982656 74434048 83156788 100415744 100891648 102346816 120955328 125965312 148868096 166313576 200831488 204693632 241910656 332627152 401662976 409387264 483821312 665254304 818774528 967642624 1330508608 1637549056 1935285248 2661017216 5322034432 10644068864 21288137728
- Sum of all divisors σ(n): 51461186976
- Sum of proper divisors (its aliquot sum) s(n): 30173049248
- 21288137728 is an abundant number, because the sum of its proper divisors (30173049248) is greater than itself. Its abundance is 8884911520
Bases of 21288137728
- Binary: 100111101001101111100110100000000002
- Hexadecimal: 0x4F4DF3400
- Base-36: 9S2EO74
Squares and roots of 21288137728
- 21288137728 squared (212881377282) is 453184807926297001984
- 21288137728 cubed (212881377283) is 9647460607372236651268881252352
-
The
square root of 21288137728 is 145904.5500592767 -
The
cube root of 21288137728 is 2771.4851575205
Scales and comparisons
How big is 21288137728?- 21,288,137,728 seconds is equal to 676 years, 46 weeks, 4 days, 11 hours, 35 minutes, 28 seconds.
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To count from 1 to 21,288,137,728 would take you about one thousand, three hundred fifty-three 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 21288137728 cubic inches would be around 231 feet tall.
Recreational maths with 21288137728
- 21288137728 backwards is 82773188212
- The number of decimal digits it has is: 11
- The sum of 21288137728's digits is 49
- More coming soon!
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