21361320
21,361,320 is an even composite number composed of five prime numbers multiplied together.
21361320 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 21361320:
23 × 34 × 5 × 19 × 347
(2 × 2 × 2 × 3 × 3 × 3 × 3 × 5 × 19 × 347)See below for interesting mathematical facts about the number 21361320 from the Numbermatics database.
Names of 21361320
- Cardinal: 21361320 can be written as Twenty-one million, three hundred sixty-one thousand, three hundred twenty.
Scientific notation
- Scientific notation: 2.136132 × 107
Factors of 21361320
Divisors of 21361320
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 18 19 20 24 27 30 36 38 40 45 54 57 60 72 76 81 90 95 108 114 120 135 152 162 171 180 190 216 228 270 285 324 342 347 360 380 405 456 513 540 570 648 684 694 760 810 855 1026 1041 1080 1140 1368 1388 1539 1620 1710 1735 2052 2082 2280 2565 2776 3078 3123 3240 3420 3470 4104 4164 5130 5205 6156 6246 6593 6840 6940 7695 8328 9369 10260 10410 12312 12492 13186 13880 15390 15615 18738 19779 20520 20820 24984 26372 28107 30780 31230 32965 37476 39558 41640 46845 52744 56214 59337 61560 62460 65930 74952 79116 93690 98895 112428 118674 124920 131860 140535 158232 178011 187380 197790 224856 237348 263720 281070 296685 356022 374760 395580 474696 534033 562140 593370 712044 791160 890055 1068066 1124280 1186740 1424088 1780110 2136132 2373480 2670165 3560220 4272264 5340330 7120440 10680660 21361320
- Sum of all divisors σ(n): 75794400
- Sum of proper divisors (its aliquot sum) s(n): 54433080
- 21361320 is an abundant number, because the sum of its proper divisors (54433080) is greater than itself. Its abundance is 33071760
Bases of 21361320
- Binary: 10100010111110010101010002
- Hexadecimal: 0x145F2A8
- Base-36: CPUI0
Squares and roots of 21361320
- 21361320 squared (213613202) is 456305992142400
- 21361320 cubed (213613203) is 9747298316071291968000
-
The
square root of 21361320 is 4621.8308060767 -
The
cube root of 21361320 is 277.4657371869
Scales and comparisons
How big is 21361320?- 21,361,320 seconds is equal to 35 weeks, 2 days, 5 hours, 42 minutes.
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To count from 1 to 21,361,320 would take you about six days!
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 21361320 cubic inches would be around 23.1 feet tall.
Recreational maths with 21361320
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