28909920
28,909,920 is an even composite number composed of six prime numbers multiplied together.
28909920 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 28909920:
25 × 3 × 5 × 13 × 41 × 113
(2 × 2 × 2 × 2 × 2 × 3 × 5 × 13 × 41 × 113)See below for interesting mathematical facts about the number 28909920 from the Numbermatics database.
Names of 28909920
- Cardinal: 28909920 can be written as Twenty-eight million, nine hundred nine thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 2.890992 × 107
Factors of 28909920
Divisors of 28909920
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 13 15 16 20 24 26 30 32 39 40 41 48 52 60 65 78 80 82 96 104 113 120 123 130 156 160 164 195 205 208 226 240 246 260 312 328 339 390 410 416 452 480 492 520 533 565 615 624 656 678 780 820 904 984 1040 1066 1130 1230 1248 1312 1356 1469 1560 1599 1640 1695 1808 1968 2080 2132 2260 2460 2665 2712 2938 3120 3198 3280 3390 3616 3936 4264 4407 4520 4633 4920 5330 5424 5876 6240 6396 6560 6780 7345 7995 8528 8814 9040 9266 9840 10660 10848 11752 12792 13560 13899 14690 15990 17056 17628 18080 18532 19680 21320 22035 23165 23504 25584 27120 27798 29380 31980 35256 37064 42640 44070 46330 47008 51168 54240 55596 58760 60229 63960 69495 70512 74128 85280 88140 92660 111192 117520 120458 127920 138990 141024 148256 176280 180687 185320 222384 235040 240916 255840 277980 301145 352560 361374 370640 444768 481832 555960 602290 705120 722748 741280 903435 963664 1111920 1204580 1445496 1806870 1927328 2223840 2409160 2890992 3613740 4818320 5781984 7227480 9636640 14454960 28909920
- Sum of all divisors σ(n): 101352384
- Sum of proper divisors (its aliquot sum) s(n): 72442464
- 28909920 is an abundant number, because the sum of its proper divisors (72442464) is greater than itself. Its abundance is 43532544
Bases of 28909920
- Binary: 11011100100100001011000002
- Hexadecimal: 0x1B92160
- Base-36: H7N1C
Squares and roots of 28909920
- 28909920 squared (289099202) is 835783474406400
- 28909920 cubed (289099203) is 24162433382411071488000
-
The
square root of 28909920 is 5376.7945841365 -
The
cube root of 28909920 is 306.9132442385
Scales and comparisons
How big is 28909920?- 28,909,920 seconds is equal to 47 weeks, 5 days, 14 hours, 32 minutes.
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To count from 1 to 28,909,920 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 28909920 cubic inches would be around 25.6 feet tall.
Recreational maths with 28909920
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