28509840

Names of 28509840

• Cardinal: 28509840 can be written as Twenty-eight million, five hundred nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.850984 × 10⁷

Factors of 28509840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 274

Divisors of 28509840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 36 40 45 48 54 60 67 72 80 90 108 120 134 135 144 180 197 201 216 240 268 270 335 360 394 402 432 536 540 591 603 670 720 788 804 985 1005 1072 1080 1182 1206 1340 1576 1608 1773 1809 1970 2010 2160 2364 2412 2680 2955 3015 3152 3216 3546 3618 3940 4020 4728 4824 5319 5360 5910 6030 7092 7236 7880 8040 8865 9045 9456 9648 10638 11820 12060 13199 14184 14472 15760 16080 17730 18090 21276 23640 24120 26398 26595 28368 28944 35460 36180 39597 42552 47280 48240 52796 53190 65995 70920 72360 79194 85104 105592 106380 118791 131990 141840 144720 158388 197985 211184 212760 237582 263980 316776 356373 395970 425520 475164 527960 593955 633552 712746 791940 950328 1055920 1187910 1425492 1583880 1781865 1900656 2375820 2850984 3167760 3563730 4751640 5701968 7127460 9503280 14254920 28509840
• Sum of all divisors σ(n): 100172160
• Sum of proper divisors (its aliquot sum) s(n): 71662320
• 28509840 is an abundant number, because the sum of its proper divisors (71662320) is greater than itself. Its abundance is 43152480

Bases of 28509840

• Binary: 1101100110000011010010000₂
• Hexadecimal: 0x1B30690
• Base-36: GZ2C0

Squares and roots of 28509840

• 28509840 squared (28509840²) is 812810976825600
• 28509840 cubed (28509840³) is 23173110899541563904000
• The square root of 28509840 is 5339.4606469193
• The cube root of 28509840 is 305.4908873733

Scales and comparisons

• 28,509,840 seconds is equal to 47 weeks, 23 hours, 24 minutes.
• To count from 1 to 28,509,840 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 28509840 cubic inches would be around 25.5 feet tall.

Recreational maths with 28509840

• 28509840 backwards is 04890582
• 28509840 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28509840's digits is 36
• More coming soon!