21138428800
21,138,428,800 is an even composite number composed of five prime numbers multiplied together.
What does the number 21138428800 look like?
This visualization shows the relationship between its 5 prime factors (large circles) and 192 divisors.
21138428800 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21138428800:
27 × 52 × 31 × 409 × 521
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 31 × 409 × 521)See below for interesting mathematical facts about the number 21138428800 from the Numbermatics database.
Names of 21138428800
- Cardinal: 21138428800 can be written as Twenty-one billion, one hundred thirty-eight million, four hundred twenty-eight thousand, eight hundred.
Scientific notation
- Scientific notation: 2.11384288 × 1010
Factors of 21138428800
Divisors of 21138428800
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 4 5 8 10 16 20 25 31 32 40 50 62 64 80 100 124 128 155 160 200 248 310 320 400 409 496 521 620 640 775 800 818 992 1042 1240 1550 1600 1636 1984 2045 2084 2480 2605 3100 3200 3272 3968 4090 4168 4960 5210 6200 6544 8180 8336 9920 10225 10420 12400 12679 13025 13088 16151 16360 16672 19840 20450 20840 24800 25358 26050 26176 32302 32720 33344 40900 41680 49600 50716 52100 52352 63395 64604 65440 66688 80755 81800 83360 99200 101432 104200 126790 129208 130880 161510 163600 166720 202864 208400 213089 253580 258416 261760 316975 323020 327200 333440 403775 405728 416800 426178 507160 516832 633950 646040 654400 807550 811456 833600 852356 1014320 1033664 1065445 1267900 1292080 1308800 1615100 1622912 1667200 1704712 2028640 2067328 2130890 2535800 2584160 3230200 3409424 4057280 4261780 5071600 5168320 5327225 6460400 6605759 6818848 8114560 8523560 10143200 10336640 10654450 12920800 13211518 13637696 17047120 20286400 21308900 25841600 26423036 27275392 33028795 34094240 40572800 42617800 51683200 52846072 66057590 68188480 85235600 105692144 132115180 136376960 165143975 170471200 211384288 264230360 330287950 340942400 422768576 528460720 660575900 681884800 845537152 1056921440 1321151800 2113842880 2642303600 4227685760 5284607200 10569214400 21138428800
- Sum of all divisors σ(n): 54138499200
- Sum of proper divisors (its aliquot sum) s(n): 33000070400
- 21138428800 is an abundant number, because the sum of its proper divisors (33000070400) is greater than itself. Its abundance is 11861641600
Bases of 21138428800
- Binary: 100111010111111001011010011100000002
- Hexadecimal: 0x4EBF2D380
- Base-36: 9PL9W1S
Squares and roots of 21138428800
- 21138428800 squared (211384288002) is 446833172132669440000
- 21138428800 cubed (211384288003) is 9445351194604577111375872000000
-
The
square root of 21138428800 is 145390.6076746361 -
The
cube root of 21138428800 is 2764.9730406439
Scales and comparisons
How big is 21138428800?- 21,138,428,800 seconds is equal to 672 years, 7 weeks, 17 hours, 46 minutes, 40 seconds.
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To count from 1 to 21,138,428,800 would take you about one thousand, three hundred forty-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 21138428800 cubic inches would be around 230.4 feet tall.
Recreational maths with 21138428800
- 21138428800 backwards is 00882483112
- The number of decimal digits it has is: 11
- The sum of 21138428800's digits is 37
- More coming soon!
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