28978440040

Names of 28978440040

• Cardinal: 28978440040 can be written as Twenty-eight billion, nine hundred seventy-eight million, four hundred forty thousand and forty.

Scientific notation

• Scientific notation: 2.897844004 × 10¹⁰

Factors of 28978440040

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 352228

Divisors of 28978440040

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 11 17 20 22 34 40 44 55 68 85 88 110 121 136 170 187 220 242 340 374 440 484 605 680 748 935 968 1210 1496 1870 2057 2420 3740 4114 4840 7480 8228 10285 16456 20570 41140 82280 352193 704386 1408772 1760965 2817544 3521930 3874123 5987281 7043860 7748246 11974562 14087720 15496492 19370615 23949124 29936405 30992984 38741230 42615353 47898248 59872810 65860091 77482460 85230706 119745620 131720182 154964920 170461412 213076765 239491240 263440364 329300455 340922824 426153530 526880728 658600910 724461001 852307060 1317201820 1448922002 1704614120 2634403640 2897844004 3622305005 5795688008 7244610010 14489220020 28978440040
• Sum of all divisors σ(n): 75883719240
• Sum of proper divisors (its aliquot sum) s(n): 46905279200
• 28978440040 is an abundant number, because the sum of its proper divisors (46905279200) is greater than itself. Its abundance is 17926839160

Bases of 28978440040

• Binary: 11010111111001111111110011101101000₂
• Hexadecimal: 0x6BF3FE768
• Base-36: DB90JFS

Squares and roots of 28978440040

• 28978440040 squared (28978440040²) is 839749987151875201600
• 28978440040 cubed (28978440040³) is 24334644651271385903128512064000
• The square root of 28978440040 is 170230.5496672087
• The cube root of 28978440040 is 3071.5552687927

Scales and comparisons

• 28,978,440,040 seconds is equal to 921 years, 22 weeks, 14 hours, 40 minutes, 40 seconds.
• To count from 1 to 28,978,440,040 would take you about one thousand, eight hundred forty-two years!

  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 28978440040 cubic inches would be around 256 feet tall.

Recreational maths with 28978440040

• 28978440040 backwards is 04004487982
• The number of decimal digits it has is: 11
• The sum of 28978440040's digits is 46
• More coming soon!