28891389840

Names of 28891389840

• Cardinal: 28891389840 can be written as Twenty-eight billion, eight hundred ninety-one million, three hundred eighty-nine thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.889138984 × 10¹⁰

Factors of 28891389840

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 6051

Divisors of 28891389840

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 17 20 24 30 34 40 48 51 60 68 80 85 102 120 136 170 204 240 255 272 340 408 510 680 816 1020 1360 1601 2040 3202 4080 4423 4803 6404 8005 8846 9606 12808 13269 16010 17692 19212 22115 24015 25616 26538 27217 32020 35384 38424 44230 48030 53076 54434 64040 66345 70768 75191 76848 81651 88460 96060 106152 108868 128080 132690 136085 150382 163302 176920 192120 212304 217736 225573 265380 272170 300764 326604 353840 375955 384240 408255 435472 451146 530760 544340 601528 653208 751910 816510 902292 1061520 1088680 1127865 1203056 1306416 1503820 1633020 1804584 2177360 2255730 3007640 3266040 3609168 4511460 6015280 6532080 7081223 9022920 14162446 18045840 21243669 28324892 35406115 42487338 56649784 70812230 84974676 106218345 113299568 120380791 141624460 169949352 212436690 240761582 283248920 339898704 361142373 424873380 481523164 566497840 601903955 722284746 849746760 963046328 1203807910 1444569492 1699493520 1805711865 1926092656 2407615820 2889138984 3611423730 4815231640 5778277968 7222847460 9630463280 14445694920 28891389840
• Sum of all divisors σ(n): 94912425216
• Sum of proper divisors (its aliquot sum) s(n): 66021035376
• 28891389840 is an abundant number, because the sum of its proper divisors (66021035376) is greater than itself. Its abundance is 37129645536

Bases of 28891389840

• Binary: 11010111010000011111001111110010000₂
• Hexadecimal: 0x6BA0F9F90
• Base-36: D9T6R2O

Squares and roots of 28891389840

• 28891389840 squared (28891389840²) is 834712406886855225600
• 28891389840 cubed (28891389840³) is 24116001551652835094450747904000
• The square root of 28891389840 is 169974.6741135279
• The cube root of 28891389840 is 3068.4765698171

Scales and comparisons

• 28,891,389,840 seconds is equal to 918 years, 34 weeks, 1 day, 2 hours, 4 minutes.
• To count from 1 to 28,891,389,840 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 28891389840 cubic inches would be around 255.7 feet tall.

Recreational maths with 28891389840

• 28891389840 backwards is 04898319882
• 28891389840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28891389840's digits is 60
• More coming soon!