20398400
20,398,400 is an even composite number composed of five prime numbers multiplied together.
20398400 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty-eight divisors.
Prime factorization of 20398400:
26 × 52 × 11 × 19 × 61
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 11 × 19 × 61)See below for interesting mathematical facts about the number 20398400 from the Numbermatics database.
Names of 20398400
- Cardinal: 20398400 can be written as Twenty million, three hundred ninety-eight thousand, four hundred.
Scientific notation
- Scientific notation: 2.03984 × 107
Factors of 20398400
Divisors of 20398400
- Number of divisors d(n): 168
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Complete list of divisors:
1 2 4 5 8 10 11 16 19 20 22 25 32 38 40 44 50 55 61 64 76 80 88 95 100 110 122 152 160 176 190 200 209 220 244 275 304 305 320 352 380 400 418 440 475 488 550 608 610 671 704 760 800 836 880 950 976 1045 1100 1159 1216 1220 1342 1520 1525 1600 1672 1760 1900 1952 2090 2200 2318 2440 2684 3040 3050 3344 3355 3520 3800 3904 4180 4400 4636 4880 5225 5368 5795 6080 6100 6688 6710 7600 8360 8800 9272 9760 10450 10736 11590 12200 12749 13376 13420 15200 16720 16775 17600 18544 19520 20900 21472 23180 24400 25498 26840 28975 30400 33440 33550 37088 41800 42944 46360 48800 50996 53680 57950 63745 66880 67100 74176 83600 92720 97600 101992 107360 115900 127490 134200 167200 185440 203984 214720 231800 254980 268400 318725 334400 370880 407968 463600 509960 536800 637450 815936 927200 1019920 1073600 1274900 1854400 2039840 2549800 4079680 5099600 10199200 20398400
- Sum of all divisors σ(n): 58582560
- Sum of proper divisors (its aliquot sum) s(n): 38184160
- 20398400 is an abundant number, because the sum of its proper divisors (38184160) is greater than itself. Its abundance is 17785760
Bases of 20398400
- Binary: 10011011101000001010000002
- Hexadecimal: 0x1374140
- Base-36: C57I8
Squares and roots of 20398400
- 20398400 squared (203984002) is 416094722560000
- 20398400 cubed (203984003) is 8487666588667904000000
-
The
square root of 20398400 is 4516.4587898043 -
The
cube root of 20398400 is 273.2322979079
Scales and comparisons
How big is 20398400?- 20,398,400 seconds is equal to 33 weeks, 5 days, 2 hours, 13 minutes, 20 seconds.
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To count from 1 to 20,398,400 would take you about fifty weeks!
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 20398400 cubic inches would be around 22.8 feet tall.
Recreational maths with 20398400
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