28618857729

Names of 28618857729

• Cardinal: 28618857729 can be written as Twenty-eight billion, six hundred eighteen million, eight hundred fifty-seven thousand, seven hundred twenty-nine.

Scientific notation

• Scientific notation: 2.8618857729 × 10¹⁰

Factors of 28618857729

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 929

Divisors of 28618857729

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 11 21 31 33 49 63 77 93 99 147 217 231 279 341 343 441 539 651 693 877 961 1023 1029 1519 1617 1953 2387 2631 2883 3069 3087 3773 4557 4851 6139 6727 7161 7893 8649 9647 10571 10633 11319 13671 16709 18417 20181 21483 27187 28941 31713 31899 33957 42973 47089 50127 55251 60543 67529 73997 81561 86823 95139 95697 116963 128919 141267 150381 190309 202587 221991 244683 299057 300811 329623 350889 386757 423801 472703 517979 570927 607761 665973 842797 897171 902433 988869 1052667 1332163 1418109 1553937 1712781 2093399 2528391 2691513 2707299 2966607 3308921 3625853 3996489 4254327 4661811 5899579 6280197 7585173 9270767 9325141 9926763 10877559 11989467 14653793 17698737 18840591 27812301 27975423 29780289 32632677 41297053 43961379 53096211 64895369 83436903 83926269 102576551 123891159 131884137 194686107 289079371 307729653 371673477 454267583 584058321 867238113 923188959 1362802749 2601714339 3179873081 4088408247 9539619243 28618857729
• Sum of all divisors σ(n): 54403689600
• Sum of proper divisors (its aliquot sum) s(n): 25784831871
• 28618857729 is a deficient number, because the sum of its proper divisors (25784831871) is less than itself. Its deficiency is 2834025858

Bases of 28618857729

• Binary: 11010101001110100010001110100000001₂
• Hexadecimal: 0x6A9D11D01
• Base-36: D5AXFY9

Squares and roots of 28618857729

• 28618857729 squared (28618857729²) is 819039017712743037441
• 28618857729 cubed (28618857729³) is 23439961122420903978859299231489
• The square root of 28618857729 is 169171.0901099831
• The cube root of 28618857729 is 3058.7977723103

Scales and comparisons

• 28,618,857,729 seconds is equal to 909 years, 51 weeks, 3 days, 18 hours, 42 minutes, 9 seconds.
• To count from 1 to 28,618,857,729 would take you about one thousand, eight hundred nineteen 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 28618857729 cubic inches would be around 254.9 feet tall.

Recreational maths with 28618857729

• 28618857729 backwards is 92775881682
• 28618857729 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28618857729's digits is 63
• More coming soon!