21182327840

Names of 21182327840

• Cardinal: 21182327840 can be written as Twenty-one billion, one hundred eighty-two million, three hundred twenty-seven thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.118232784 × 10¹⁰

Factors of 21182327840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 217

Divisors of 21182327840

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 38 40 76 80 95 152 160 190 191 304 380 382 608 760 764 955 1520 1528 1910 3040 3056 3629 3820 6112 7258 7640 14516 15280 18145 29032 30560 36290 36481 58064 72580 72962 116128 145160 145924 182405 290320 291848 364810 580640 583696 693139 729620 1167392 1386278 1459240 2772556 2918480 3465695 5545112 5836960 6931390 6967871 11090224 13862780 13935742 22180448 27725560 27871484 34839355 55451120 55742968 69678710 110902240 111485936 132389549 139357420 222971872 264779098 278714840 529558196 557429680 661947745 1059116392 1114859360 1323895490 2118232784 2647790980 4236465568 5295581960 10591163920 21182327840
• Sum of all divisors σ(n): 52954352640
• Sum of proper divisors (its aliquot sum) s(n): 31772024800
• 21182327840 is an abundant number, because the sum of its proper divisors (31772024800) is greater than itself. Its abundance is 10589696960

Bases of 21182327840

• Binary: 10011101110100100001010110000100000₂
• Hexadecimal: 0x4EE90AC20
• Base-36: 9QBESRK

Squares and roots of 21182327840

• 21182327840 squared (21182327840²) is 448691012721239065600
• 21182327840 cubed (21182327840³) is 9504320130322896418554466304000
• The square root of 21182327840 is 145541.4986868007
• The cube root of 21182327840 is 2766.8857613947

Scales and comparisons

• 21,182,327,840 seconds is equal to 673 years, 27 weeks, 4 days, 19 hours, 57 minutes, 20 seconds.
• To count from 1 to 21,182,327,840 would take you about one thousand, three hundred forty-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 21182327840 cubic inches would be around 230.6 feet tall.

Recreational maths with 21182327840

• 21182327840 backwards is 04872328112
• 21182327840 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21182327840's digits is 38
• More coming soon!