20721829128
20,721,829,128 is an even composite number composed of seven prime numbers multiplied together.
20721829128 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of five hundred twelve divisors.
Prime factorization of 20721829128:
23 × 3 × 73 × 11 × 13 × 29 × 607
(2 × 2 × 2 × 3 × 7 × 7 × 7 × 11 × 13 × 29 × 607)See below for interesting mathematical facts about the number 20721829128 from the Numbermatics database.
Names of 20721829128
- Cardinal: 20721829128 can be written as Twenty billion, seven hundred twenty-one million, eight hundred twenty-nine thousand, one hundred twenty-eight.
Scientific notation
- Scientific notation: 2.0721829128 × 1010
Factors of 20721829128
Divisors of 20721829128
- Number of divisors d(n): 512
-
Complete list of divisors:
1 2 3 4 6 7 8 11 12 13 14 21 22 24 26 28 29 33 39 42 44 49 52 56 58 66 77 78 84 87 88 91 98 104 116 132 143 147 154 156 168 174 182 196 203 231 232 264 273 286 294 308 312 319 343 348 364 377 392 406 429 462 539 546 572 588 607 609 616 637 638 686 696 728 754 812 858 924 957 1001 1029 1078 1092 1131 1144 1176 1214 1218 1274 1276 1372 1421 1508 1617 1624 1716 1821 1848 1911 1914 2002 2058 2156 2184 2233 2262 2428 2436 2548 2552 2639 2744 2842 3003 3016 3234 3432 3642 3773 3822 3828 4004 4116 4147 4249 4263 4312 4459 4466 4524 4856 4872 5096 5278 5684 6006 6468 6677 6699 7007 7284 7546 7644 7656 7891 7917 8008 8232 8294 8498 8526 8918 8932 9048 9947 10556 11319 11368 12012 12441 12747 12936 13354 13377 13398 14014 14568 15092 15288 15631 15782 15834 16588 16996 17052 17603 17836 17864 18473 19894 20031 21021 21112 22638 23673 24024 24882 25494 26708 26754 26796 28028 29029 29743 29841 30184 31262 31564 31668 33176 33992 34104 35206 35672 36946 39788 40062 42042 45276 46739 46893 47346 49049 49764 50988 52809 53416 53508 53592 55237 55419 56056 58058 59486 59682 62524 63128 63336 70412 73892 79576 80124 84084 86801 87087 89229 90552 93478 93786 94692 98098 99528 101976 105618 107016 109417 110474 110838 116116 118972 119364 123221 125048 129311 140217 140824 147147 147784 160248 165711 168168 173602 174174 178458 186956 187572 189384 193633 196196 203203 208201 211236 218834 220948 221676 228839 232232 237944 238728 246442 258622 260403 280434 294294 327173 328251 331422 347204 348348 356916 369663 373912 375144 386659 387266 387933 392392 406406 416402 422472 437668 441896 443352 457678 492884 517244 520806 560868 580899 588588 607607 609609 624603 654346 656502 662844 686517 694408 696696 713832 739326 773318 774532 775866 812812 832804 862547 875336 915356 981519 985768 1034488 1041612 1121736 1159977 1161798 1177176 1215214 1219218 1249206 1308692 1313004 1325688 1355431 1373034 1422421 1478652 1546636 1549064 1551732 1601873 1625624 1665608 1725094 1822821 1830712 1963038 2083224 2290211 2319954 2323596 2430428 2438436 2498412 2517229 2587641 2617384 2626008 2706613 2710862 2746068 2844842 2957304 3093272 3103464 3203746 3450188 3645642 3926076 4066293 4253249 4267263 4580422 4639908 4647192 4805619 4860856 4876872 4996824 5034458 5175282 5413226 5421724 5492136 5689684 6037829 6407492 6870633 6900376 7291284 7551687 7852152 8119839 8132586 8506498 8534526 9160844 9279816 9488017 9611238 10068916 10350564 10826452 10843448 11213111 11379368 12075658 12759747 12814984 13741266 14582568 15103374 16239678 16265172 17012996 17069052 17620603 18113487 18321688 18976034 19222476 20137832 20701128 21652904 22426222 24151316 25519494 27482532 28464051 29772743 30206748 32479356 32530344 33639333 34025992 34138104 35241206 36226974 37952068 38444952 44852444 48302632 51038988 52861809 54965064 56928102 59545486 60413496 64958712 66416119 67278666 70482412 72453948 75904136 78491777 89318229 89704888 102077976 105723618 113856204 119090972 123344221 132832238 134557332 140964824 144907896 156983554 178636458 199248357 211447236 227712408 235475331 238181944 246688442 265664476 269114664 313967108 357272916 370032663 398496714 422894472 470950662 493376884 531328952 627934216 714545832 740065326 796993428 863409547 941901324 986753768 1480130652 1593986856 1726819094 1883802648 2590228641 2960261304 3453638188 5180457282 6907276376 10360914564 20721829128
- Sum of all divisors σ(n): 73543680000
- Sum of proper divisors (its aliquot sum) s(n): 52821850872
- 20721829128 is an abundant number, because the sum of its proper divisors (52821850872) is greater than itself. Its abundance is 32100021744
Bases of 20721829128
- Binary: 100110100110001111000000101000010002
- Hexadecimal: 0x4D31E0508
- Base-36: 9IP8POO
Squares and roots of 20721829128
- 20721829128 squared (207218291282) is 429394202410029240384
- 20721829128 cubed (207218291283) is 8897833290894471712720885105152
-
The
square root of 20721829128 is 143950.7871739505 -
The
cube root of 20721829128 is 2746.6882062151
Scales and comparisons
How big is 20721829128?- 20,721,829,128 seconds is equal to 658 years, 46 weeks, 1 day, 23 hours, 38 minutes, 48 seconds.
-
To count from 1 to 20,721,829,128 would take you about one thousand, three hundred seventeen 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 20721829128 cubic inches would be around 228.9 feet tall.
Recreational maths with 20721829128
- 20721829128 backwards is 82192812702
- 20721829128 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 20721829128's digits is 42
- More coming soon!
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