21621346720
21,621,346,720 is an even composite number composed of six prime numbers multiplied together.
21621346720 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21621346720:
25 × 5 × 29 × 41 × 89 × 1277
(2 × 2 × 2 × 2 × 2 × 5 × 29 × 41 × 89 × 1277)See below for interesting mathematical facts about the number 21621346720 from the Numbermatics database.
Names of 21621346720
- Cardinal: 21621346720 can be written as Twenty-one billion, six hundred twenty-one million, three hundred forty-six thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 2.162134672 × 1010
Factors of 21621346720
Divisors of 21621346720
- Number of divisors d(n): 192
-
Complete list of divisors:
1 2 4 5 8 10 16 20 29 32 40 41 58 80 82 89 116 145 160 164 178 205 232 290 328 356 410 445 464 580 656 712 820 890 928 1160 1189 1277 1312 1424 1640 1780 2320 2378 2554 2581 2848 3280 3560 3649 4640 4756 5108 5162 5945 6385 6560 7120 7298 9512 10216 10324 11890 12770 12905 14240 14596 18245 19024 20432 20648 23780 25540 25810 29192 36490 37033 38048 40864 41296 47560 51080 51620 52357 58384 72980 74066 82592 95120 102160 103240 104714 105821 113653 116768 145960 148132 185165 190240 204320 206480 209428 211642 227306 261785 291920 296264 370330 412960 418856 423284 454612 523570 529105 568265 583840 592528 740660 837712 846568 909224 1047140 1058210 1136530 1185056 1481320 1518353 1675424 1693136 1818448 2094280 2116420 2273060 2962640 3036706 3295937 3386272 3636896 4188560 4232840 4546120 4659773 5925280 6073412 6591874 7591765 8377120 8465680 9092240 9319546 12146824 13183748 15183530 16479685 16931360 18184480 18639092 23298865 24293648 26367496 30367060 32959370 37278184 46597730 48587296 52734992 60734120 65918740 74556368 93195460 105469984 121468240 131837480 135133417 149112736 186390920 242936480 263674960 270266834 372781840 527349920 540533668 675667085 745563680 1081067336 1351334170 2162134672 2702668340 4324269344 5405336680 10810673360 21621346720
- Sum of all divisors σ(n): 54781725600
- Sum of proper divisors (its aliquot sum) s(n): 33160378880
- 21621346720 is an abundant number, because the sum of its proper divisors (33160378880) is greater than itself. Its abundance is 11539032160
Bases of 21621346720
- Binary: 101000010001011101110010001101000002
- Hexadecimal: 0x508BB91A0
- Base-36: 9XKSHWG
Squares and roots of 21621346720
- 21621346720 squared (216213467202) is 467482633986454758400
- 21621346720 cubed (216213467203) is 10107604114999994114960232448000
-
The
square root of 21621346720 is 147041.9896492155 -
The
cube root of 21621346720 is 2785.8704304899
Scales and comparisons
How big is 21621346720?- 21,621,346,720 seconds is equal to 687 years, 25 weeks, 4 days, 1 hour, 38 minutes, 40 seconds.
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To count from 1 to 21,621,346,720 would take you about one thousand, three hundred seventy-four 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 21621346720 cubic inches would be around 232.2 feet tall.
Recreational maths with 21621346720
- 21621346720 backwards is 02764312612
- The number of decimal digits it has is: 11
- The sum of 21621346720's digits is 34
- More coming soon!
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