21085440
21,085,440 is an even composite number composed of five prime numbers multiplied together.
21085440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 21085440:
28 × 3 × 5 × 172 × 19
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 17 × 17 × 19)See below for interesting mathematical facts about the number 21085440 from the Numbermatics database.
Names of 21085440
- Cardinal: 21085440 can be written as Twenty-one million, eighty-five thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.108544 × 107
Factors of 21085440
Divisors of 21085440
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 16 17 19 20 24 30 32 34 38 40 48 51 57 60 64 68 76 80 85 95 96 102 114 120 128 136 152 160 170 190 192 204 228 240 255 256 272 285 289 304 320 323 340 380 384 408 456 480 510 544 570 578 608 640 646 680 760 768 816 867 912 960 969 1020 1088 1140 1156 1216 1280 1292 1360 1445 1520 1615 1632 1734 1824 1920 1938 2040 2176 2280 2312 2432 2584 2720 2890 3040 3230 3264 3468 3648 3840 3876 4080 4335 4352 4560 4624 4845 4864 5168 5440 5491 5780 6080 6460 6528 6936 7296 7752 8160 8670 9120 9248 9690 10336 10880 10982 11560 12160 12920 13056 13872 14592 15504 16320 16473 17340 18240 18496 19380 20672 21760 21964 23120 24320 25840 27455 27744 31008 32640 32946 34680 36480 36992 38760 41344 43928 46240 51680 54910 55488 62016 65280 65892 69360 72960 73984 77520 82365 82688 87856 92480 103360 109820 110976 124032 131784 138720 155040 164730 175712 184960 206720 219640 221952 248064 263568 277440 310080 329460 351424 369920 413440 439280 527136 554880 620160 658920 702848 878560 1054272 1109760 1240320 1317840 1405696 1757120 2108544 2635680 3514240 4217088 5271360 7028480 10542720 21085440
- Sum of all divisors σ(n): 75300960
- Sum of proper divisors (its aliquot sum) s(n): 54215520
- 21085440 is an abundant number, because the sum of its proper divisors (54215520) is greater than itself. Its abundance is 33130080
Bases of 21085440
- Binary: 10100000110111101000000002
- Hexadecimal: 0x141BD00
- Base-36: CJXMO
Squares and roots of 21085440
- 21085440 squared (210854402) is 444595779993600
- 21085440 cubed (210854403) is 9374497643308253184000
-
The
square root of 21085440 is 4591.8885003885 -
The
cube root of 21085440 is 276.2660740153
Scales and comparisons
How big is 21085440?- 21,085,440 seconds is equal to 34 weeks, 6 days, 1 hour, 4 minutes.
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To count from 1 to 21,085,440 would take you about two 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 21085440 cubic inches would be around 23 feet tall.
Recreational maths with 21085440
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The information we have on file for 21085440 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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