21149859888

Names of 21149859888

• Cardinal: 21149859888 can be written as Twenty-one billion, one hundred forty-nine million, eight hundred fifty-nine thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1149859888 × 10¹⁰

Factors of 21149859888

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 7002

Divisors of 21149859888

• Number of divisors d(n): 60
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 6997 13994 20991 27988 41982 55976 62973 83964 111952 125946 167928 188919 251892 335856 377838 503784 755676 1007568 1511352 3022704 48958009 97916018 146874027 195832036 293748054 391664072 440622081 587496108 783328144 881244162 1174992216 1321866243 1762488324 2349984432 2643732486 3524976648 5287464972 7049953296 10574929944 21149859888
• Sum of all divisors σ(n): 60716608680
• Sum of proper divisors (its aliquot sum) s(n): 39566748792
• 21149859888 is an abundant number, because the sum of its proper divisors (39566748792) is greater than itself. Its abundance is 18416888904

Bases of 21149859888

• Binary: 10011101100101000010100000000110000₂
• Hexadecimal: 0x4ECA14030
• Base-36: 9PS2WC0

Squares and roots of 21149859888

• 21149859888 squared (21149859888²) is 447316573282031372544
• 21149859888 cubed (21149859888³) is 9460682850495247837325930115072
• The square root of 21149859888 is 145429.9140067133
• The cube root of 21149859888 is 2765.4713582627

Scales and comparisons

• 21,149,859,888 seconds is equal to 672 years, 26 weeks, 1 hour, 4 minutes, 48 seconds.
• To count from 1 to 21,149,859,888 would take you about one thousand, three hundred forty-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 21149859888 cubic inches would be around 230.5 feet tall.

Recreational maths with 21149859888

• 21149859888 backwards is 88895894112
• The number of decimal digits it has is: 11
• The sum of 21149859888's digits is 63
• More coming soon!