21318356800

Names of 21318356800

• Cardinal: 21318356800 can be written as Twenty-one billion, three hundred eighteen million, three hundred fifty-six thousand, eight hundred.

Scientific notation

• Scientific notation: 2.13183568 × 10¹⁰

Factors of 21318356800

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1024941

Divisors of 21318356800

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 64 65 80 100 104 130 160 200 208 260 320 325 400 416 520 650 800 832 1040 1300 1600 2080 2600 4160 5200 10400 20800 1024921 2049842 4099684 5124605 8199368 10249210 13323973 16398736 20498420 25623025 26647946 32797472 40996840 51246050 53295892 65594944 66619865 81993680 102492100 106591784 133239730 163987360 204984200 213183568 266479460 327974720 333099325 409968400 426367136 532958920 666198650 819936800 852734272 1065917840 1332397300 1639873600 2131835680 2664794600 4263671360 5329589200 10659178400 21318356800
• Sum of all divisors σ(n): 56491650796
• Sum of proper divisors (its aliquot sum) s(n): 35173293996
• 21318356800 is an abundant number, because the sum of its proper divisors (35173293996) is greater than itself. Its abundance is 13854937196

Bases of 21318356800

• Binary: 10011110110101011000100111101000000₂
• Hexadecimal: 0x4F6AC4F40
• Base-36: 9SKEDDS

Squares and roots of 21318356800

• 21318356800 squared (21318356800²) is 454472336652106240000
• 21318356800 cubed (21318356800³) is 9688603428479318295826432000000
• The square root of 21318356800 is 146008.0710097905
• The cube root of 21318356800 is 2772.7959362049

Scales and comparisons

• 21,318,356,800 seconds is equal to 677 years, 44 weeks, 4 days, 5 hours, 46 minutes, 40 seconds.
• To count from 1 to 21,318,356,800 would take you about one thousand, three hundred fifty-five 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 21318356800 cubic inches would be around 231.1 feet tall.

Recreational maths with 21318356800

• 21318356800 backwards is 00865381312
• The number of decimal digits it has is: 11
• The sum of 21318356800's digits is 37
• More coming soon!