28268640

Names of 28268640

• Cardinal: 28268640 can be written as Twenty-eight million, two hundred sixty-eight thousand, six hundred forty.

Scientific notation

• Scientific notation: 2.826864 × 10⁷

Factors of 28268640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 370

Divisors of 28268640

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 67 72 80 90 96 120 134 144 160 180 201 240 268 288 293 335 360 402 480 536 586 603 670 720 804 879 1005 1072 1172 1206 1340 1440 1465 1608 1758 2010 2144 2344 2412 2637 2680 2930 3015 3216 3516 4020 4395 4688 4824 5274 5360 5860 6030 6432 7032 8040 8790 9376 9648 10548 10720 11720 12060 13185 14064 16080 17580 19296 19631 21096 23440 24120 26370 28128 32160 35160 39262 42192 46880 48240 52740 58893 70320 78524 84384 96480 98155 105480 117786 140640 157048 176679 196310 210960 235572 294465 314096 353358 392620 421920 471144 588930 628192 706716 785240 883395 942288 1177860 1413432 1570480 1766790 1884576 2355720 2826864 3140960 3533580 4711440 5653728 7067160 9422880 14134320 28268640
• Sum of all divisors σ(n): 98240688
• Sum of proper divisors (its aliquot sum) s(n): 69972048
• 28268640 is an abundant number, because the sum of its proper divisors (69972048) is greater than itself. Its abundance is 41703408

Bases of 28268640

• Binary: 1101011110101100001100000₂
• Hexadecimal: 0x1AF5860
• Base-36: GTW80

Squares and roots of 28268640

• 28268640 squared (28268640²) is 799116007449600
• 28268640 cubed (28268640³) is 22589922732830060544000
• The square root of 28268640 is 5316.8261209107
• The cube root of 28268640 is 304.6269379433

Scales and comparisons

• 28,268,640 seconds is equal to 46 weeks, 5 days, 4 hours, 24 minutes.
• To count from 1 to 28,268,640 would take you about eighteen 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 28268640 cubic inches would be around 25.4 feet tall.

Recreational maths with 28268640

• 28268640 backwards is 04686282
• 28268640 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28268640's digits is 36
• More coming soon!