28790709720

Names of 28790709720

• Cardinal: 28790709720 can be written as Twenty-eight billion, seven hundred ninety million, seven hundred nine thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 2.879070972 × 10¹⁰

Factors of 28790709720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 9941

Divisors of 28790709720

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 17 20 24 30 34 40 51 60 68 85 102 120 136 170 204 255 340 408 510 680 1020 1723 2040 3446 5169 6892 8191 8615 10338 13784 16382 17230 20676 24573 25845 29291 32764 34460 40955 41352 49146 51690 58582 65528 68920 81910 87873 98292 103380 117164 122865 139247 146455 163820 175746 196584 206760 234328 245730 278494 292910 327640 351492 417741 439365 491460 556988 585820 696235 702984 835482 878730 982920 1113976 1171640 1392470 1670964 1757460 2088705 2784940 3341928 3514920 4177410 5569880 8354820 14113093 16709640 28226186 42339279 56452372 70565465 84678558 112904744 141130930 169357116 211696395 239922581 282261860 338714232 423392790 479845162 564523720 719767743 846785580 959690324 1199612905 1439535486 1693571160 1919380648 2399225810 2879070972 3598838715 4798451620 5758141944 7197677430 9596903240 14395354860 28790709720
• Sum of all divisors σ(n): 91517091840
• Sum of proper divisors (its aliquot sum) s(n): 62726382120
• 28790709720 is an abundant number, because the sum of its proper divisors (62726382120) is greater than itself. Its abundance is 33935672400

Bases of 28790709720

• Binary: 11010110100000011110101110111011000₂
• Hexadecimal: 0x6B40F5DD8
• Base-36: D858TSO

Squares and roots of 28790709720

• 28790709720 squared (28790709720²) is 828904966181302478400
• 28790709720 cubed (28790709720³) is 23864762266792296547130970048000
• The square root of 28790709720 is 169678.2535270799
• The cube root of 28790709720 is 3064.9081001837

Scales and comparisons

• 28,790,709,720 seconds is equal to 915 years, 23 weeks, 4 days, 19 hours, 22 minutes.
• To count from 1 to 28,790,709,720 would take you about one thousand, eight hundred thirty 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 28790709720 cubic inches would be around 255.4 feet tall.

Recreational maths with 28790709720

• 28790709720 backwards is 02790709782
• 28790709720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28790709720's digits is 51
• More coming soon!