28870800
28,870,800 is an even composite number composed of five prime numbers multiplied together.
28870800 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eighty divisors.
Prime factorization of 28870800:
24 × 3 × 52 × 72 × 491
(2 × 2 × 2 × 2 × 3 × 5 × 5 × 7 × 7 × 491)See below for interesting mathematical facts about the number 28870800 from the Numbermatics database.
Names of 28870800
- Cardinal: 28870800 can be written as Twenty-eight million, eight hundred seventy thousand, eight hundred.
Scientific notation
- Scientific notation: 2.88708 × 107
Factors of 28870800
Divisors of 28870800
- Number of divisors d(n): 180
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 25 28 30 35 40 42 48 49 50 56 60 70 75 80 84 98 100 105 112 120 140 147 150 168 175 196 200 210 240 245 280 294 300 336 350 392 400 420 490 491 525 560 588 600 700 735 784 840 980 982 1050 1176 1200 1225 1400 1470 1473 1680 1960 1964 2100 2352 2450 2455 2800 2940 2946 3437 3675 3920 3928 4200 4900 4910 5880 5892 6874 7350 7365 7856 8400 9800 9820 10311 11760 11784 12275 13748 14700 14730 17185 19600 19640 20622 23568 24059 24550 27496 29400 29460 34370 36825 39280 41244 48118 49100 51555 54992 58800 58920 68740 72177 73650 82488 85925 96236 98200 103110 117840 120295 137480 144354 147300 164976 171850 192472 196400 206220 240590 257775 274960 288708 294600 343700 360885 384944 412440 481180 515550 577416 589200 601475 687400 721770 824880 962360 1031100 1154832 1202950 1374800 1443540 1804425 1924720 2062200 2405900 2887080 3608850 4124400 4811800 5774160 7217700 9623600 14435400 28870800
- Sum of all divisors σ(n): 107801136
- Sum of proper divisors (its aliquot sum) s(n): 78930336
- 28870800 is an abundant number, because the sum of its proper divisors (78930336) is greater than itself. Its abundance is 50059536
Bases of 28870800
- Binary: 11011100010001000100100002
- Hexadecimal: 0x1B88890
- Base-36: H6SUO
Squares and roots of 28870800
- 28870800 squared (288708002) is 833523092640000
- 28870800 cubed (288708003) is 24064478502990912000000
-
The
square root of 28870800 is 5373.1554974709 -
The
cube root of 28870800 is 306.7747466137
Scales and comparisons
How big is 28870800?- 28,870,800 seconds is equal to 47 weeks, 5 days, 3 hours, 40 minutes.
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To count from 1 to 28,870,800 would take you about nineteen 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 28870800 cubic inches would be around 25.6 feet tall.
Recreational maths with 28870800
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