21721851312
21,721,851,312 is an even composite number composed of six prime numbers multiplied together.
21721851312 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 21721851312:
24 × 3 × 72 × 67 × 307 × 449
(2 × 2 × 2 × 2 × 3 × 7 × 7 × 67 × 307 × 449)See below for interesting mathematical facts about the number 21721851312 from the Numbermatics database.
Names of 21721851312
- Cardinal: 21721851312 can be written as Twenty-one billion, seven hundred twenty-one million, eight hundred fifty-one thousand, three hundred twelve.
Scientific notation
- Scientific notation: 2.1721851312 × 1010
Factors of 21721851312
Divisors of 21721851312
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 49 56 67 84 98 112 134 147 168 196 201 268 294 307 336 392 402 449 469 536 588 614 784 804 898 921 938 1072 1176 1228 1347 1407 1608 1796 1842 1876 2149 2352 2456 2694 2814 3143 3216 3283 3592 3684 3752 4298 4912 5388 5628 6286 6447 6566 7184 7368 7504 8596 9429 9849 10776 11256 12572 12894 13132 14736 15043 17192 18858 19698 20569 21552 22001 22512 25144 25788 26264 30083 30086 34384 37716 39396 41138 44002 45129 50288 51576 52528 60166 60172 61707 66003 75432 78792 82276 88004 90249 90258 103152 120332 120344 123414 132006 137843 143983 150864 157584 164552 176008 180498 180516 210581 240664 240688 246828 264012 275686 287966 329104 352016 360996 361032 413529 421162 431949 481328 493656 528024 551372 575932 631743 721992 722064 827058 842324 863898 964901 987312 1007881 1056048 1102744 1151864 1263486 1443984 1474067 1654116 1684648 1727796 1929802 2015762 2205488 2303728 2526972 2894703 2948134 3023643 3308232 3369296 3455592 3859604 4031524 4422201 5053944 5789406 5896268 6047286 6616464 6754307 6911184 7719208 8063048 8844402 9235481 10107888 11578812 11792536 12094572 13508614 15438416 16126096 17688804 18470962 20262921 23157624 23585072 24189144 27017228 27706443 35377608 36941924 40525842 46315248 48378288 54034456 55412886 64648367 70755216 73883848 81051684 108068912 110825772 129296734 147767696 162103368 193945101 221651544 258593468 324206736 387890202 443303088 452538569 517186936 775780404 905077138 1034373872 1357615707 1551560808 1810154276 2715231414 3103121616 3620308552 5430462828 7240617104 10860925656 21721851312
- Sum of all divisors σ(n): 66614486400
- Sum of proper divisors (its aliquot sum) s(n): 44892635088
- 21721851312 is an abundant number, because the sum of its proper divisors (44892635088) is greater than itself. Its abundance is 23170783776
Bases of 21721851312
- Binary: 101000011101011100100100101101100002
- Hexadecimal: 0x50EB925B0
- Base-36: 9Z8MNQO
Squares and roots of 21721851312
- 21721851312 squared (217218513122) is 471838824420636121344
- 21721851312 cubed (217218513123) is 10249212787293932372290757603328
-
The
square root of 21721851312 is 147383.3481503253 -
The
cube root of 21721851312 is 2790.1803693723
Scales and comparisons
How big is 21721851312?- 21,721,851,312 seconds is equal to 690 years, 35 weeks, 5 days, 7 hours, 35 minutes, 12 seconds.
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To count from 1 to 21,721,851,312 would take you about one thousand, three hundred eighty-one 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 21721851312 cubic inches would be around 232.5 feet tall.
Recreational maths with 21721851312
- 21721851312 backwards is 21315812712
- The number of decimal digits it has is: 11
- The sum of 21721851312's digits is 33
- More coming soon!
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