21345120
21,345,120 is an even composite number composed of four prime numbers multiplied together.
21345120 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21345120:
25 × 37 × 5 × 61
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 3 × 3 × 3 × 3 × 3 × 5 × 61)See below for interesting mathematical facts about the number 21345120 from the Numbermatics database.
Names of 21345120
- Cardinal: 21345120 can be written as Twenty-one million, three hundred forty-five thousand, one hundred twenty.
Scientific notation
- Scientific notation: 2.134512 × 107
Factors of 21345120
Divisors of 21345120
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 61 72 80 81 90 96 108 120 122 135 144 160 162 180 183 216 240 243 244 270 288 305 324 360 366 405 432 480 486 488 540 549 610 648 720 729 732 810 864 915 972 976 1080 1098 1215 1220 1296 1440 1458 1464 1620 1647 1830 1944 1952 2160 2187 2196 2430 2440 2592 2745 2916 2928 3240 3294 3645 3660 3888 4320 4374 4392 4860 4880 4941 5490 5832 5856 6480 6588 7290 7320 7776 8235 8748 8784 9720 9760 9882 10935 10980 11664 12960 13176 14580 14640 14823 16470 17496 17568 19440 19764 21870 21960 23328 24705 26352 29160 29280 29646 32940 34992 38880 39528 43740 43920 44469 49410 52704 58320 59292 65880 69984 74115 79056 87480 87840 88938 98820 116640 118584 131760 133407 148230 158112 174960 177876 197640 222345 237168 263520 266814 296460 349920 355752 395280 444690 474336 533628 592920 667035 711504 790560 889380 1067256 1185840 1334070 1423008 1778760 2134512 2371680 2668140 3557520 4269024 5336280 7115040 10672560 21345120
- Sum of all divisors σ(n): 76870080
- Sum of proper divisors (its aliquot sum) s(n): 55524960
- 21345120 is an abundant number, because the sum of its proper divisors (55524960) is greater than itself. Its abundance is 34179840
Bases of 21345120
- Binary: 10100010110110011011000002
- Hexadecimal: 0x145B360
- Base-36: CPI00
Squares and roots of 21345120
- 21345120 squared (213451202) is 455614147814400
- 21345120 cubed (213451203) is 9725138658796105728000
-
The
square root of 21345120 is 4620.0779214209 -
The
cube root of 21345120 is 277.3955779503
Scales and comparisons
How big is 21345120?- 21,345,120 seconds is equal to 35 weeks, 2 days, 1 hour, 12 minutes.
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To count from 1 to 21,345,120 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 21345120 cubic inches would be around 23.1 feet tall.
Recreational maths with 21345120
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