1228128720
1,228,128,720 is an even composite number composed of seven prime numbers multiplied together.
1228128720 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred twenty divisors.
Prime factorization of 1228128720:
24 × 3 × 5 × 7 × 13 × 53 × 1061
(2 × 2 × 2 × 2 × 3 × 5 × 7 × 13 × 53 × 1061)See below for interesting mathematical facts about the number 1228128720 from the Numbermatics database.
Names of 1228128720
- Cardinal: 1228128720 can be written as One billion, two hundred twenty-eight million, one hundred twenty-eight thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 1.22812872 × 109
Factors of 1228128720
Divisors of 1228128720
- Number of divisors d(n): 320
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Complete list of divisors:
1 2 3 4 5 6 7 8 10 12 13 14 15 16 20 21 24 26 28 30 35 39 40 42 48 52 53 56 60 65 70 78 80 84 91 104 105 106 112 120 130 140 156 159 168 182 195 208 210 212 240 260 265 273 280 312 318 336 364 371 390 420 424 455 520 530 546 560 624 636 689 728 742 780 795 840 848 910 1040 1060 1061 1092 1113 1272 1365 1378 1456 1484 1560 1590 1680 1820 1855 2067 2120 2122 2184 2226 2544 2730 2756 2968 3120 3180 3183 3445 3640 3710 4134 4240 4244 4368 4452 4823 5305 5460 5512 5565 5936 6360 6366 6890 7280 7420 7427 8268 8488 8904 9646 10335 10610 10920 11024 11130 12720 12732 13780 13793 14469 14840 14854 15915 16536 16976 17808 19292 20670 21220 21840 22260 22281 24115 25464 27560 27586 28938 29680 29708 31830 33072 37135 38584 41340 41379 42440 44520 44562 48230 50928 55120 55172 56233 57876 59416 63660 68965 72345 74270 77168 82680 82758 84880 89040 89124 96460 96551 110344 111405 112466 115752 118832 127320 137930 144690 148540 165360 165516 168699 178248 192920 193102 206895 220688 222810 224932 231504 254640 275860 281165 289380 289653 297080 331032 337398 356496 385840 386204 393631 413790 445620 449864 482755 551720 562330 578760 579306 594160 662064 674796 731029 772408 787262 827580 843495 891240 899728 965510 1103440 1124660 1157520 1158612 1180893 1349592 1448265 1462058 1544816 1574524 1655160 1686990 1782480 1931020 1968155 2193087 2249320 2317224 2361786 2699184 2896530 2924116 3149048 3310320 3373980 3655145 3862040 3936310 4386174 4498640 4634448 4723572 5117203 5793060 5848232 5904465 6298096 6747960 7310290 7724080 7872620 8772348 9447144 10234406 10965435 11586120 11696464 11808930 13495920 14620580 15351609 15745240 17544696 18894288 20468812 21930870 23172240 23617860 25586015 29241160 30703218 31490480 35089392 40937624 43861740 47235720 51172030 58482320 61406436 76758045 81875248 87723480 94471440 102344060 122812872 153516090 175446960 204688120 245625744 307032180 409376240 614064360 1228128720
- Sum of all divisors σ(n): 4778694144
- Sum of proper divisors (its aliquot sum) s(n): 3550565424
- 1228128720 is an abundant number, because the sum of its proper divisors (3550565424) is greater than itself. Its abundance is 2322436704
Bases of 1228128720
- Binary: 10010010011001111000001110100002
- Hexadecimal: 0x4933C1D0
- Base-36: KB726O
Squares and roots of 1228128720
- 1228128720 squared (12281287202) is 1508300152888838400
- 1228128720 cubed (12281287203) is 1852386736143173406478848000
-
The
square root of 1228128720 is 35044.6674973525 -
The
cube root of 1228128720 is 1070.8976425249
Scales and comparisons
How big is 1228128720?- 1,228,128,720 seconds is equal to 39 years, 2 weeks, 4 days, 10 hours, 52 minutes.
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To count from 1 to 1,228,128,720 would take you about seventy-eight 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 1228128720 cubic inches would be around 89.2 feet tall.
Recreational maths with 1228128720
- 1228128720 backwards is 0278218221
- The number of decimal digits it has is: 10
- The sum of 1228128720's digits is 33
- More coming soon!
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