21128722824
21,128,722,824 is an even composite number composed of six prime numbers multiplied together.
21128722824 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21128722824:
23 × 3 × 112 × 312 × 67 × 113
(2 × 2 × 2 × 3 × 11 × 11 × 31 × 31 × 67 × 113)See below for interesting mathematical facts about the number 21128722824 from the Numbermatics database.
Names of 21128722824
- Cardinal: 21128722824 can be written as Twenty-one billion, one hundred twenty-eight million, seven hundred twenty-two thousand, eight hundred twenty-four.
Scientific notation
- Scientific notation: 2.1128722824 × 1010
Factors of 21128722824
Divisors of 21128722824
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 3 4 6 8 11 12 22 24 31 33 44 62 66 67 88 93 113 121 124 132 134 186 201 226 242 248 264 268 339 341 363 372 402 452 484 536 678 682 726 737 744 804 904 961 968 1023 1243 1356 1364 1452 1474 1608 1922 2046 2077 2211 2486 2712 2728 2883 2904 2948 3503 3729 3751 3844 4092 4154 4422 4972 5766 5896 6231 7006 7458 7502 7571 7688 8107 8184 8308 8844 9944 10509 10571 11253 11532 12462 13673 14012 14916 15004 15142 16214 16616 17688 21018 21142 22506 22713 22847 23064 24321 24924 27346 28024 29832 30008 30284 31713 32428 38533 41019 42036 42284 45012 45426 45694 48642 49848 54692 60568 63426 64387 64856 68541 77066 82038 83281 84072 84568 90024 90852 91388 97284 108593 109384 115599 116281 126852 128774 137082 154132 164076 166562 181704 182776 193161 194568 217186 231198 232562 234701 249843 251317 253704 257548 274164 308264 325779 328152 333124 348843 386322 423863 434372 462396 465124 469402 499686 502634 515096 548328 651558 666248 697686 704103 708257 753951 772644 847726 868744 916091 924792 930248 938804 999372 1005268 1194523 1271589 1303116 1395372 1408206 1416514 1507902 1545288 1695452 1832182 1877608 1998744 2010536 2124771 2389046 2543178 2581711 2606232 2748273 2790744 2816412 2833028 3015804 3390904 3583569 3664364 4249542 4778092 5086356 5163422 5496546 5632824 5666056 6031608 7167138 7275731 7328728 7745133 7790827 8499084 9556184 10172712 10326844 10993092 13139753 14334276 14551462 15490266 15581654 16998168 20653688 21827193 21986184 23372481 26279506 28398821 28668552 29102924 30980532 31163308 39419259 43654386 46744962 52559012 56797642 58205848 61961064 62326616 78838518 80033041 85196463 87308772 93489924 105118024 113595284 157677036 160066082 170392926 174617544 186979848 227190568 240099123 315354072 320132164 340785852 480198246 640264328 681571704 880363451 960396492 1760726902 1920792984 2641090353 3521453804 5282180706 7042907608 10564361412 21128722824
- Sum of all divisors σ(n): 61427933280
- Sum of proper divisors (its aliquot sum) s(n): 40299210456
- 21128722824 is an abundant number, because the sum of its proper divisors (40299210456) is greater than itself. Its abundance is 19170487632
Bases of 21128722824
- Binary: 100111010110101111010111001100010002
- Hexadecimal: 0x4EB5EB988
- Base-36: 9PFHUVC
Squares and roots of 21128722824
- 21128722824 squared (211287228242) is 446422928173418534976
- 21128722824 cubed (211287228243) is 9432346311654620830052053492224
-
The
square root of 21128722824 is 145357.2248771969 -
The
cube root of 21128722824 is 2764.5497851163
Scales and comparisons
How big is 21128722824?- 21,128,722,824 seconds is equal to 671 years, 43 weeks, 9 hours, 40 minutes, 24 seconds.
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To count from 1 to 21,128,722,824 would take you about one thousand, three hundred forty-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 21128722824 cubic inches would be around 230.4 feet tall.
Recreational maths with 21128722824
- 21128722824 backwards is 42822782112
- The number of decimal digits it has is: 11
- The sum of 21128722824's digits is 39
- More coming soon!
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