20929920
20,929,920 is an even composite number composed of five prime numbers multiplied together.
20929920 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20929920:
27 × 3 × 5 × 11 × 991
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 5 × 11 × 991)See below for interesting mathematical facts about the number 20929920 from the Numbermatics database.
Names of 20929920
- Cardinal: 20929920 can be written as Twenty million, nine hundred twenty-nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.092992 × 107
Factors of 20929920
Divisors of 20929920
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 4 5 6 8 10 11 12 15 16 20 22 24 30 32 33 40 44 48 55 60 64 66 80 88 96 110 120 128 132 160 165 176 192 220 240 264 320 330 352 384 440 480 528 640 660 704 880 960 991 1056 1320 1408 1760 1920 1982 2112 2640 2973 3520 3964 4224 4955 5280 5946 7040 7928 9910 10560 10901 11892 14865 15856 19820 21120 21802 23784 29730 31712 32703 39640 43604 47568 54505 59460 63424 65406 79280 87208 95136 109010 118920 126848 130812 158560 163515 174416 190272 218020 237840 261624 317120 327030 348832 380544 436040 475680 523248 634240 654060 697664 872080 951360 1046496 1308120 1395328 1744160 1902720 2092992 2616240 3488320 4185984 5232480 6976640 10464960 20929920
- Sum of all divisors σ(n): 72852480
- Sum of proper divisors (its aliquot sum) s(n): 51922560
- 20929920 is an abundant number, because the sum of its proper divisors (51922560) is greater than itself. Its abundance is 30992640
Bases of 20929920
- Binary: 10011111101011101100000002
- Hexadecimal: 0x13F5D80
- Base-36: CGLMO
Squares and roots of 20929920
- 20929920 squared (209299202) is 438061551206400
- 20929920 cubed (209299203) is 9168593221825855488000
-
The
square root of 20929920 is 4574.9229501711 -
The
cube root of 20929920 is 275.5851781465
Scales and comparisons
How big is 20929920?- 20,929,920 seconds is equal to 34 weeks, 4 days, 5 hours, 52 minutes.
-
To count from 1 to 20,929,920 would take you about fifty-one 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 20929920 cubic inches would be around 23 feet tall.
Recreational maths with 20929920
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