28939680

Names of 28939680

• Cardinal: 28939680 can be written as Twenty-eight million, nine hundred thirty-nine thousand, six hundred eighty.

Scientific notation

• Scientific notation: 2.893968 × 10⁷

Factors of 28939680

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 57

Divisors of 28939680

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 18 20 21 22 24 27 28 29 30 32 33 35 36 40 42 44 45 48 54 55 56 58 60 63 66 70 72 77 80 81 84 87 88 90 96 99 105 108 110 112 116 120 126 132 135 140 144 145 154 160 162 165 168 174 176 180 189 198 203 210 216 220 224 231 232 240 252 261 264 270 280 288 290 297 308 315 319 324 330 336 348 352 360 378 385 396 405 406 420 432 435 440 462 464 480 495 504 522 528 540 560 567 580 594 609 616 630 638 648 660 672 693 696 720 756 770 783 792 810 812 840 864 870 880 891 924 928 945 957 990 1008 1015 1044 1056 1080 1120 1134 1155 1160 1188 1218 1232 1260 1276 1296 1305 1320 1386 1392 1440 1485 1512 1540 1566 1584 1595 1620 1624 1680 1740 1760 1782 1827 1848 1890 1914 1980 2016 2030 2079 2088 2160 2233 2268 2310 2320 2349 2376 2436 2464 2520 2552 2592 2610 2640 2772 2784 2835 2871 2970 3024 3045 3080 3132 3168 3190 3240 3248 3360 3465 3480 3564 3654 3696 3780 3828 3915 3960 4060 4158 4176 4320 4455 4466 4536 4620 4640 4698 4752 4785 4872 5040 5104 5220 5280 5481 5544 5670 5742 5940 6048 6090 6160 6237 6264 6380 6480 6496 6699 6930 6960 7128 7308 7392 7560 7656 7830 7920 8120 8316 8352 8613 8910 8932 9072 9135 9240 9396 9504 9570 9744 10080 10208 10395 10440 10962 11088 11165 11340 11484 11745 11880 12180 12320 12474 12528 12760 12960 13398 13860 13920 14256 14355 14616 15120 15312 15660 15840 16240 16443 16632 17226 17820 17864 18144 18270 18480 18792 19140 19488 20097 20790 20880 21924 22176 22330 22680 22968 23490 23760 24360 24948 25056 25520 25839 26796 27405 27720 28512 28710 29232 30240 30624 31185 31320 32480 32886 33264 33495 34452 35640 35728 36540 36960 37584 38280 40194 41580 41760 43065 43848 44660 45360 45936 46980 47520 48720 49896 51040 51678 53592 54810 55440 57420 58464 60291 62370 62640 65772 66528 66990 68904 71280 71456 73080 75168 76560 80388 82215 83160 86130 87696 89320 90720 91872 93960 97440 99792 100485 103356 107184 109620 110880 114840 120582 124740 125280 129195 131544 133980 137808 142560 146160 153120 160776 164430 166320 172260 175392 178640 180873 187920 199584 200970 206712 214368 219240 229680 241164 249480 258390 263088 267960 275616 292320 301455 321552 328860 332640 344520 357280 361746 375840 401940 413424 438480 459360 482328 498960 516780 526176 535920 602910 643104 657720 689040 723492 803880 826848 876960 904365 964656 997920 1033560 1071840 1205820 1315440 1378080 1446984 1607760 1808730 1929312 2067120 2411640 2630880 2893968 3215520 3617460 4134240 4823280 5787936 7234920 9646560 14469840 28939680
• Sum of all divisors σ(n): 131725440
• Sum of proper divisors (its aliquot sum) s(n): 102785760
• 28939680 is an abundant number, because the sum of its proper divisors (102785760) is greater than itself. Its abundance is 73846080

Bases of 28939680

• Binary: 1101110011001010110100000₂
• Hexadecimal: 0x1B995A0
• Base-36: H8A00

Squares and roots of 28939680

• 28939680 squared (28939680²) is 837505078502400
• 28939680 cubed (28939680³) is 24237128970234335232000
• The square root of 28939680 is 5379.5613204053
• The cube root of 28939680 is 307.0185207415

Scales and comparisons

• 28,939,680 seconds is equal to 47 weeks, 5 days, 22 hours, 48 minutes.
• To count from 1 to 28,939,680 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 28939680 cubic inches would be around 25.6 feet tall.

Recreational maths with 28939680

• 28939680 backwards is 08693982
• 28939680 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28939680's digits is 45
• More coming soon!