21140946

Names of 21140946

• Cardinal: 21140946 can be written as Twenty-one million, one hundred forty thousand, nine hundred forty-six.

Scientific notation

• Scientific notation: 2.1140946 × 10⁷

Factors of 21140946

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 282

Divisors of 21140946

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 9 18 27 31 54 62 73 93 146 173 186 219 279 346 438 519 558 657 837 1038 1314 1557 1674 1971 2263 3114 3942 4526 4671 5363 6789 9342 10726 12629 13578 16089 20367 25258 32178 37887 40734 48267 61101 75774 96534 113661 122202 144801 227322 289602 340983 391499 681966 782998 1174497 2348994 3523491 7046982 10570473 21140946
• Sum of all divisors σ(n): 49443840
• Sum of proper divisors (its aliquot sum) s(n): 28302894
• 21140946 is an abundant number, because the sum of its proper divisors (28302894) is greater than itself. Its abundance is 7161948

Bases of 21140946

• Binary: 1010000101001010111010010₂
• Hexadecimal: 0x14295D2
• Base-36: CL4GI

Squares and roots of 21140946

• 21140946 squared (21140946²) is 446939597774916
• 21140946 cubed (21140946³) is 9448725901821219310536
• The square root of 21140946 is 4597.9284465941
• The cube root of 21140946 is 276.5082788849

Scales and comparisons

• 21,140,946 seconds is equal to 34 weeks, 6 days, 16 hours, 29 minutes, 6 seconds.
• To count from 1 to 21,140,946 would take you about three days!

  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 21140946 cubic inches would be around 23 feet tall.

Recreational maths with 21140946

• 21140946 backwards is 64904112
• 21140946 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 21140946's digits is 27
• More coming soon!