21385309824
21,385,309,824 is an even composite number composed of five prime numbers multiplied together.
21385309824 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 21385309824:
27 × 33 × 312 × 47 × 137
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 31 × 31 × 47 × 137)See below for interesting mathematical facts about the number 21385309824 from the Numbermatics database.
Names of 21385309824
- Cardinal: 21385309824 can be written as Twenty-one billion, three hundred eighty-five million, three hundred nine thousand, eight hundred twenty-four.
Scientific notation
- Scientific notation: 2.1385309824 × 1010
Factors of 21385309824
Divisors of 21385309824
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 47 48 54 62 64 72 93 94 96 108 124 128 137 141 144 186 188 192 216 248 274 279 282 288 372 376 384 411 423 432 496 548 558 564 576 744 752 822 837 846 864 961 992 1096 1116 1128 1152 1233 1269 1457 1488 1504 1644 1674 1692 1728 1922 1984 2192 2232 2256 2466 2538 2883 2914 2976 3008 3288 3348 3384 3456 3699 3844 3968 4247 4371 4384 4464 4512 4932 5076 5766 5828 5952 6016 6439 6576 6696 6768 7398 7688 8494 8649 8742 8768 8928 9024 9864 10152 11532 11656 11904 12741 12878 13113 13152 13392 13536 14796 15376 16988 17298 17484 17536 17856 18048 19317 19728 20304 23064 23312 25482 25756 25947 26226 26304 26784 27072 29592 30752 33976 34596 34968 35712 38223 38634 39339 39456 40608 45167 46128 46624 50964 51512 51894 52452 52608 53568 54144 57951 59184 61504 67952 69192 69936 76446 77268 78678 78912 81216 90334 92256 93248 101928 103024 103788 104904 107136 114669 115902 118368 123008 131657 135501 135904 138384 139872 152892 154536 157356 157824 162432 173853 180668 184512 186496 199609 203856 206048 207576 209808 229338 231804 236736 263314 271002 271808 276768 279744 305784 309072 314712 347706 361336 369024 394971 399218 406503 407712 412096 415152 419616 458676 463608 473472 526628 542004 543616 553536 559488 598827 611568 618144 629424 695412 722672 789942 798436 813006 815424 824192 830304 839232 917352 927216 1053256 1084008 1107072 1184913 1197654 1219509 1223136 1236288 1258848 1390824 1445344 1579884 1596872 1626012 1630848 1660608 1678464 1796481 1834704 1854432 2106512 2168016 2369826 2395308 2439018 2446272 2472576 2517696 2781648 2890688 3159768 3193744 3252024 3321216 3554739 3592962 3669408 3708864 4213024 4336032 4739652 4790616 4878036 4892544 5035392 5389443 5563296 5781376 6187879 6319536 6387488 6504048 7109478 7185924 7338816 7417728 8426048 8672064 9479304 9581232 9756072 10778886 11126592 12375758 12639072 12774976 13008096 14218956 14371848 14677632 16852096 17344128 18563637 18958608 19162464 19512144 21557772 22253184 24751516 25278144 25549952 26016192 28437912 28743696 37127274 37917216 38324928 39024288 43115544 49503032 50556288 52032384 55690911 56875824 57487392 74254548 75834432 76649856 78048576 86231088 99006064 111381822 113751648 114974784 148509096 151668864 156097152 167072733 172462176 198012128 222763644 227503296 229949568 297018192 334145466 344924352 396024256 445527288 455006592 594036384 668290932 689848704 792048512 891054576 1188072768 1336581864 1782109152 2376145536 2673163728 3564218304 5346327456 7128436608 10692654912 21385309824
- Sum of all divisors σ(n): 67091846400
- Sum of proper divisors (its aliquot sum) s(n): 45706536576
- 21385309824 is an abundant number, because the sum of its proper divisors (45706536576) is greater than itself. Its abundance is 24321226752
Bases of 21385309824
- Binary: 100111110101010100111101110100000002
- Hexadecimal: 0x4FAA9EE80
- Base-36: 9TO9EO0
Squares and roots of 21385309824
- 21385309824 squared (213853098242) is 457331476268470910976
- 21385309824 cubed (213853098243) is 9780175312268553833953282228224
-
The
square root of 21385309824 is 146237.1697756763 -
The
cube root of 21385309824 is 2775.6956759853
Scales and comparisons
How big is 21385309824?- 21,385,309,824 seconds is equal to 679 years, 51 weeks, 2 days, 3 hours, 50 minutes, 24 seconds.
-
To count from 1 to 21,385,309,824 would take you about one thousand, three hundred fifty-nine 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 21385309824 cubic inches would be around 231.3 feet tall.
Recreational maths with 21385309824
- 21385309824 backwards is 42890358312
- The number of decimal digits it has is: 11
- The sum of 21385309824's digits is 45
- More coming soon!
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