21369143840

Names of 21369143840

• Cardinal: 21369143840 can be written as Twenty-one billion, three hundred sixty-nine million, one hundred forty-three thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.136914384 × 10¹⁰

Factors of 21369143840

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 12141577

Divisors of 21369143840

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 4 5 8 10 11 16 20 22 32 40 44 55 80 88 110 160 176 220 352 440 880 1760 12141559 24283118 48566236 60707795 97132472 121415590 133557149 194264944 242831180 267114298 388529888 485662360 534228596 667785745 971324720 1068457192 1335571490 1942649440 2136914384 2671142980 4273828768 5342285960 10684571920 21369143840
• Sum of all divisors σ(n): 55074116160
• Sum of proper divisors (its aliquot sum) s(n): 33704972320
• 21369143840 is an abundant number, because the sum of its proper divisors (33704972320) is greater than itself. Its abundance is 12335828480

Bases of 21369143840

• Binary: 10011111001101100110100001000100000₂
• Hexadecimal: 0x4F9B34220
• Base-36: 9TEMWWW

Squares and roots of 21369143840

• 21369143840 squared (21369143840²) is 456640308454609945600
• 21369143840 cubed (21369143840³) is 9758012434508528038620975104000
• The square root of 21369143840 is 146181.8861555701
• The cube root of 21369143840 is 2774.9960810485

Scales and comparisons

• 21,369,143,840 seconds is equal to 679 years, 24 weeks, 4 days, 1 hour, 17 minutes, 20 seconds.
• To count from 1 to 21,369,143,840 would take you about one thousand, three hundred fifty-eight 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 21369143840 cubic inches would be around 231.2 feet tall.

Recreational maths with 21369143840

• 21369143840 backwards is 04834196312
• The number of decimal digits it has is: 11
• The sum of 21369143840's digits is 41
• More coming soon!