28887129440

Names of 28887129440

• Cardinal: 28887129440 can be written as Twenty-eight billion, eight hundred eighty-seven million, one hundred twenty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 2.888712944 × 10¹⁰

Factors of 28887129440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1068331

Divisors of 28887129440

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 26 32 40 52 65 80 104 130 160 169 208 260 338 416 520 676 845 1040 1352 1690 2080 2704 3380 5408 6760 13520 27040 1068311 2136622 4273244 5341555 8546488 10683110 13888043 17092976 21366220 27776086 34185952 42732440 55552172 69440215 85464880 111104344 138880430 170929760 180544559 222208688 277760860 361089118 444417376 555521720 722178236 902722795 1111043440 1444356472 1805445590 2222086880 2888712944 3610891180 5777425888 7221782360 14443564720 28887129440
• Sum of all divisors σ(n): 73899414288
• Sum of proper divisors (its aliquot sum) s(n): 45012284848
• 28887129440 is an abundant number, because the sum of its proper divisors (45012284848) is greater than itself. Its abundance is 16125155408

Bases of 28887129440

• Binary: 11010111001110011101001110101100000₂
• Hexadecimal: 0x6B9CE9D60
• Base-36: D9QNFQ8

Squares and roots of 28887129440

• 28887129440 squared (28887129440²) is 834466247283314713600
• 28887129440 cubed (28887129440³) is 24105334498584160484019728384000
• The square root of 28887129440 is 169962.1411962087
• The cube root of 28887129440 is 3068.3257338725

Scales and comparisons

• 28,887,129,440 seconds is equal to 918 years, 27 weeks, 18 hours, 37 minutes, 20 seconds.
• To count from 1 to 28,887,129,440 would take you about one thousand, eight hundred thirty-seven 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 28887129440 cubic inches would be around 255.7 feet tall.

Recreational maths with 28887129440

• 28887129440 backwards is 04492178882
• The number of decimal digits it has is: 11
• The sum of 28887129440's digits is 53
• More coming soon!