28311121920

Names of 28311121920

• Cardinal: 28311121920 can be written as Twenty-eight billion, three hundred eleven million, one hundred twenty-one thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 2.831112192 × 10¹⁰

Factors of 28311121920

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 460803

Divisors of 28311121920

• Number of divisors d(n): 104
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 512 640 768 960 1024 1280 1536 1920 2048 2560 3072 3840 4096 5120 6144 7680 10240 12288 15360 20480 30720 61440 460793 921586 1382379 1843172 2303965 2764758 3686344 4607930 5529516 6911895 7372688 9215860 11059032 13823790 14745376 18431720 22118064 27647580 29490752 36863440 44236128 55295160 58981504 73726880 88472256 110590320 117963008 147453760 176944512 221180640 235926016 294907520 353889024 442361280 471852032 589815040 707778048 884722560 943704064 1179630080 1415556096 1769445120 1887408128 2359260160 2831112192 3538890240 4718520320 5662224384 7077780480 9437040640 14155560960 28311121920
• Sum of all divisors σ(n): 90584727696
• Sum of proper divisors (its aliquot sum) s(n): 62273605776
• 28311121920 is an abundant number, because the sum of its proper divisors (62273605776) is greater than itself. Its abundance is 33962483856

Bases of 28311121920

• Binary: 11010010111011110010111000000000000₂
• Hexadecimal: 0x697797000
• Base-36: D07PLHC

Squares and roots of 28311121920

• 28311121920 squared (28311121920²) is 801519624369104486400
• 28311121920 cubed (28311121920³) is 22691919806786320195689381888000
• The square root of 28311121920 is 168259.0916414325
• The cube root of 28311121920 is 3047.7945866351

Scales and comparisons

• 28,311,121,920 seconds is equal to 900 years, 10 weeks, 5 days, 32 minutes.
• To count from 1 to 28,311,121,920 would take you about one thousand, eight hundred 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 28311121920 cubic inches would be around 254 feet tall.

Recreational maths with 28311121920

• 28311121920 backwards is 02912111382
• 28311121920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 28311121920's digits is 30
• More coming soon!