128432920
128,432,920 is an even composite number composed of six prime numbers multiplied together.
128432920 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred fifty-six divisors.
Prime factorization of 128432920:
23 × 5 × 73 × 11 × 23 × 37
(2 × 2 × 2 × 5 × 7 × 7 × 7 × 11 × 23 × 37)See below for interesting mathematical facts about the number 128432920 from the Numbermatics database.
Names of 128432920
- Cardinal: 128432920 can be written as One hundred twenty-eight million, four hundred thirty-two thousand, nine hundred twenty.
Scientific notation
- Scientific notation: 1.2843292 × 108
Factors of 128432920
Divisors of 128432920
- Number of divisors d(n): 256
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Complete list of divisors:
1 2 4 5 7 8 10 11 14 20 22 23 28 35 37 40 44 46 49 55 56 70 74 77 88 92 98 110 115 140 148 154 161 184 185 196 220 230 245 253 259 280 296 308 322 343 370 385 392 407 440 460 490 506 518 539 616 644 686 740 770 805 814 851 920 980 1012 1036 1078 1127 1265 1288 1295 1372 1480 1540 1610 1628 1702 1715 1771 1813 1960 2024 2035 2072 2156 2254 2530 2590 2695 2744 2849 3080 3220 3256 3404 3430 3542 3626 3773 4070 4255 4312 4508 5060 5180 5390 5635 5698 5957 6440 6808 6860 7084 7252 7546 7889 8140 8510 8855 9016 9065 9361 10120 10360 10780 11270 11396 11914 12397 12691 13720 14168 14245 14504 15092 15778 16280 17020 17710 18130 18722 18865 19943 21560 22540 22792 23828 24794 25382 28490 29785 30184 31556 34040 35420 36260 37444 37730 39445 39886 41699 45080 46805 47656 49588 50764 56980 59570 61985 63112 63455 65527 70840 72520 74888 75460 78890 79772 83398 86779 93610 99176 99715 101528 113960 119140 123970 126910 131054 139601 150920 157780 159544 166796 173558 187220 199430 208495 238280 247940 253820 262108 279202 291893 315560 327635 333592 347116 374440 398860 416990 433895 458689 495880 507640 524216 558404 583786 655270 694232 698005 797720 833980 867790 917378 1116808 1167572 1310540 1396010 1459465 1667960 1735580 1834756 2293445 2335144 2621080 2792020 2918930 3210823 3471160 3669512 4586890 5584040 5837860 6421646 9173780 11675720 12843292 16054115 18347560 25686584 32108230 64216460 128432920
- Sum of all divisors σ(n): 393984000
- Sum of proper divisors (its aliquot sum) s(n): 265551080
- 128432920 is an abundant number, because the sum of its proper divisors (265551080) is greater than itself. Its abundance is 137118160
Bases of 128432920
- Binary: 1111010011110111011000110002
- Hexadecimal: 0x7A7BB18
- Base-36: 24GRH4
Squares and roots of 128432920
- 128432920 squared (1284329202) is 16495014939726400
- 128432920 cubed (1284329203) is 2118502934152685553088000
-
The
square root of 128432920 is 11332.8248905557 -
The
cube root of 128432920 is 504.5359525009
Scales and comparisons
How big is 128432920?- 128,432,920 seconds is equal to 4 years, 4 weeks, 2 days, 11 hours, 48 minutes, 40 seconds.
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To count from 1 to 128,432,920 would take you about six 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 128432920 cubic inches would be around 42 feet tall.
Recreational maths with 128432920
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