28147860

Names of 28147860

• Cardinal: 28147860 can be written as Twenty-eight million, one hundred forty-seven thousand, eight hundred sixty.

Scientific notation

• Scientific notation: 2.814786 × 10⁷

Factors of 28147860

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 569

Divisors of 28147860

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 13 15 18 20 23 26 30 36 39 45 46 52 60 65 69 78 90 92 115 117 130 138 156 180 195 207 230 234 260 276 299 345 390 414 460 468 523 585 598 690 780 828 897 1035 1046 1170 1196 1380 1495 1569 1794 2070 2092 2340 2615 2691 2990 3138 3588 4140 4485 4707 5230 5382 5980 6276 6799 7845 8970 9414 10460 10764 12029 13455 13598 15690 17940 18828 20397 23535 24058 26910 27196 31380 33995 36087 40794 47070 48116 53820 60145 61191 67990 72174 81588 94140 101985 108261 120290 122382 135980 144348 156377 180435 203970 216522 240580 244764 305955 312754 360870 407940 433044 469131 541305 611910 625508 721740 781885 938262 1082610 1223820 1407393 1563770 1876524 2165220 2345655 2814786 3127540 4691310 5629572 7036965 9382620 14073930 28147860
• Sum of all divisors σ(n): 96130944
• Sum of proper divisors (its aliquot sum) s(n): 67983084
• 28147860 is an abundant number, because the sum of its proper divisors (67983084) is greater than itself. Its abundance is 39835224

Bases of 28147860

• Binary: 1101011011000000010010100₂
• Hexadecimal: 0x1AD8094
• Base-36: GRB10

Squares and roots of 28147860

• 28147860 squared (28147860²) is 792302022579600
• 28147860 cubed (28147860³) is 22301606409287419656000
• The square root of 28147860 is 5305.4556825969
• The cube root of 28147860 is 304.1924710287

Scales and comparisons

• 28,147,860 seconds is equal to 46 weeks, 3 days, 18 hours, 51 minutes.
• To count from 1 to 28,147,860 would take you about seventeen 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 28147860 cubic inches would be around 25.3 feet tall.

Recreational maths with 28147860

• 28147860 backwards is 06874182
• 28147860 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28147860's digits is 36
• More coming soon!