28561428

Names of 28561428

• Cardinal: 28561428 can be written as Twenty-eight million, five hundred sixty-one thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 2.8561428 × 10⁷

Factors of 28561428

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 201

Divisors of 28561428

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 7 9 12 14 17 18 21 28 34 36 42 51 59 63 68 84 102 113 118 119 126 153 177 204 226 236 238 252 306 339 354 357 413 452 476 531 612 678 708 714 791 826 1003 1017 1062 1071 1239 1356 1428 1582 1652 1921 2006 2034 2124 2142 2373 2478 3009 3164 3717 3842 4012 4068 4284 4746 4956 5763 6018 6667 7021 7119 7434 7684 9027 9492 11526 12036 13334 13447 14042 14238 14868 17289 18054 20001 21063 23052 26668 26894 28084 28476 34578 36108 40002 40341 42126 46669 53788 60003 63189 69156 80004 80682 84252 93338 113339 120006 121023 126378 140007 161364 186676 226678 240012 242046 252756 280014 340017 420021 453356 484092 560028 680034 793373 840042 1020051 1360068 1586746 1680084 2040102 2380119 3173492 4080204 4760238 7140357 9520476 14280714 28561428
• Sum of all divisors σ(n): 89631360
• Sum of proper divisors (its aliquot sum) s(n): 61069932
• 28561428 is an abundant number, because the sum of its proper divisors (61069932) is greater than itself. Its abundance is 32508504

Bases of 28561428

• Binary: 1101100111101000000010100₂
• Hexadecimal: 0x1B3D014
• Base-36: H0650

Squares and roots of 28561428

• 28561428 squared (28561428²) is 815755169399184
• 28561428 cubed (28561428³) is 23299132536422597074752
• The square root of 28561428 is 5344.2892885771
• The cube root of 28561428 is 305.6750362833

Scales and comparisons

• 28,561,428 seconds is equal to 47 weeks, 1 day, 13 hours, 43 minutes, 48 seconds.
• To count from 1 to 28,561,428 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 28561428 cubic inches would be around 25.5 feet tall.

Recreational maths with 28561428

• 28561428 backwards is 82416582
• 28561428 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 28561428's digits is 36
• More coming soon!