28928640

Names of 28928640

• Cardinal: 28928640 can be written as Twenty-eight million, nine hundred twenty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.892864 × 10⁷

Factors of 28928640

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 103

Divisors of 28928640

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 13 15 16 19 20 24 26 30 32 38 39 40 48 52 57 60 61 64 65 76 78 80 95 96 104 114 120 122 128 130 152 156 160 183 190 192 195 208 228 240 244 247 260 285 304 305 312 320 366 380 384 390 416 456 480 488 494 520 570 608 610 624 640 732 741 760 780 793 832 912 915 960 976 988 1040 1140 1159 1216 1220 1235 1248 1464 1482 1520 1560 1586 1664 1824 1830 1920 1952 1976 2080 2280 2318 2379 2432 2440 2470 2496 2928 2964 3040 3120 3172 3477 3648 3660 3705 3904 3952 3965 4160 4560 4636 4758 4880 4940 4992 5795 5856 5928 6080 6240 6344 6954 7296 7320 7410 7808 7904 7930 8320 9120 9272 9516 9760 9880 11590 11712 11856 11895 12160 12480 12688 13908 14640 14820 15067 15808 15860 17385 18240 18544 19032 19520 19760 23180 23424 23712 23790 24960 25376 27816 29280 29640 30134 31616 31720 34770 36480 37088 38064 39040 39520 45201 46360 47424 47580 50752 55632 58560 59280 60268 63440 69540 74176 75335 76128 79040 90402 92720 94848 95160 101504 111264 117120 118560 120536 126880 139080 148352 150670 152256 158080 180804 185440 190320 222528 226005 237120 241072 253760 278160 301340 304512 361608 370880 380640 445056 452010 474240 482144 507520 556320 602680 723216 741760 761280 904020 964288 1112640 1205360 1446432 1522560 1808040 1928576 2225280 2410720 2892864 3616080 4821440 5785728 7232160 9642880 14464320 28928640
• Sum of all divisors σ(n): 106243200
• Sum of proper divisors (its aliquot sum) s(n): 77314560
• 28928640 is an abundant number, because the sum of its proper divisors (77314560) is greater than itself. Its abundance is 48385920

Bases of 28928640

• Binary: 1101110010110101010000000₂
• Hexadecimal: 0x1B96A80
• Base-36: H81HC

Squares and roots of 28928640

• 28928640 squared (28928640²) is 836866212249600
• 28928640 cubed (28928640³) is 24209401382332268544000
• The square root of 28928640 is 5378.5351165535
• The cube root of 28928640 is 306.9794749795

Scales and comparisons

• 28,928,640 seconds is equal to 47 weeks, 5 days, 19 hours, 44 minutes.
• To count from 1 to 28,928,640 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 28928640 cubic inches would be around 25.6 feet tall.

Recreational maths with 28928640

• 28928640 backwards is 04682982
• 28928640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28928640's digits is 39
• More coming soon!