21228081792

Names of 21228081792

• Cardinal: 21228081792 can be written as Twenty-one billion, two hundred twenty-eight million, eighty-one thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 2.1228081792 × 10¹⁰

Factors of 21228081792

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 1783309

Divisors of 21228081792

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 31 32 48 62 64 93 96 124 128 186 192 248 372 384 496 744 992 1488 1984 2976 3968 5952 11904 1783273 3566546 5349819 7133092 10699638 14266184 21399276 28532368 42798552 55281463 57064736 85597104 110562926 114129472 165844389 171194208 221125852 228258944 331688778 342388416 442251704 663377556 684776832 884503408 1326755112 1769006816 2653510224 3538013632 5307020448 7076027264 10614040896 21228081792
• Sum of all divisors σ(n): 58206063360
• Sum of proper divisors (its aliquot sum) s(n): 36977981568
• 21228081792 is an abundant number, because the sum of its proper divisors (36977981568) is greater than itself. Its abundance is 15749899776

Bases of 21228081792

• Binary: 10011110001010010101101001010000000₂
• Hexadecimal: 0x4F14AD280
• Base-36: 9R2NGQO

Squares and roots of 21228081792

• 21228081792 squared (21228081792²) is 450631456567841931264
• 21228081792 cubed (21228081792³) is 9566041418070244113799433945088
• The square root of 21228081792 is 145698.5991422017
• The cube root of 21228081792 is 2768.8764918935

Scales and comparisons

• 21,228,081,792 seconds is equal to 674 years, 51 weeks, 2 days, 9 hours, 23 minutes, 12 seconds.
• To count from 1 to 21,228,081,792 would take you about one thousand, three hundred forty-nine 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 21228081792 cubic inches would be around 230.7 feet tall.

Recreational maths with 21228081792

• 21228081792 backwards is 29718082212
• The number of decimal digits it has is: 11
• The sum of 21228081792's digits is 42
• More coming soon!