21729981672
21,729,981,672 is an even composite number composed of five prime numbers multiplied together.
21729981672 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21729981672:
23 × 33 × 7 × 172 × 2232
(2 × 2 × 2 × 3 × 3 × 3 × 7 × 17 × 17 × 223 × 223)See below for interesting mathematical facts about the number 21729981672 from the Numbermatics database.
Names of 21729981672
- Cardinal: 21729981672 can be written as Twenty-one billion, seven hundred twenty-nine million, nine hundred eighty-one thousand, six hundred seventy-two.
Scientific notation
- Scientific notation: 2.1729981672 × 1010
Factors of 21729981672
Divisors of 21729981672
- Number of divisors d(n): 288
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 17 18 21 24 27 28 34 36 42 51 54 56 63 68 72 84 102 108 119 126 136 153 168 189 204 216 223 238 252 289 306 357 378 408 446 459 476 504 578 612 669 714 756 867 892 918 952 1071 1156 1224 1338 1428 1512 1561 1734 1784 1836 2007 2023 2142 2312 2601 2676 2856 3122 3213 3468 3672 3791 4014 4046 4284 4683 5202 5352 6021 6069 6244 6426 6936 7582 7803 8028 8092 8568 9366 10404 11373 12042 12138 12488 12852 14049 15164 15606 16056 16184 18207 18732 20808 22746 24084 24276 25704 26537 28098 30328 31212 34119 36414 37464 42147 45492 48168 48552 49729 53074 54621 56196 62424 64447 68238 72828 79611 84294 90984 99458 102357 106148 109242 112392 128894 136476 145656 149187 159222 168588 193341 198916 204714 212296 218484 238833 257788 272952 298374 318444 337176 348103 386682 397832 409428 436968 447561 451129 477666 515576 580023 596748 636888 696206 716499 773364 818856 845393 895122 902258 955332 1044309 1160046 1193496 1342683 1353387 1392412 1432998 1546728 1690786 1740069 1790244 1804516 1910664 2088618 2320092 2536179 2685366 2706774 2784824 2865996 3132927 3381572 3480138 3580488 3609032 4060161 4177236 4640184 5072358 5370732 5413548 5731992 5917751 6265854 6763144 6960276 7608537 8120322 8354472 9398781 10144716 10741464 10827096 11835502 12180483 12531708 13920552 14371681 15217074 16240644 17753253 18797562 20289432 22825611 23671004 24360966 25063416 28743362 30434148 32481288 35506506 37595124 43115043 45651222 47342008 48721932 53259759 57486724 60868296 71013012 75190248 86230086 91302444 97443864 100601767 106519518 114973448 129345129 142026024 159779277 172460172 182604888 201203534 213039036 258690258 301805301 319558554 344920344 388035387 402407068 426078072 517380516 603610602 639117108 776070774 804814136 905415903 1034761032 1207221204 1278234216 1552141548 1810831806 2414442408 2716247709 3104283096 3621663612 5432495418 7243327224 10864990836 21729981672
- Sum of all divisors σ(n): 73610740800
- Sum of proper divisors (its aliquot sum) s(n): 51880759128
- 21729981672 is an abundant number, because the sum of its proper divisors (51880759128) is greater than itself. Its abundance is 30150777456
Bases of 21729981672
- Binary: 101000011110011010100110100111010002
- Hexadecimal: 0x50F3534E8
- Base-36: 9ZDGX60
Squares and roots of 21729981672
- 21729981672 squared (217299816722) is 472192103465455915584
- 21729981672 cubed (217299816723) is 10260725753967484730764299176448
-
The
square root of 21729981672 is 147410.9279259851 -
The
cube root of 21729981672 is 2790.5284419317
Scales and comparisons
How big is 21729981672?- 21,729,981,672 seconds is equal to 690 years, 49 weeks, 1 day, 10 hours, 1 minute, 12 seconds.
-
To count from 1 to 21,729,981,672 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 21729981672 cubic inches would be around 232.5 feet tall.
Recreational maths with 21729981672
- 21729981672 backwards is 27618992712
- 21729981672 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21729981672's digits is 54
- More coming soon!
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