21201418978400

Names of 21201418978400

• Cardinal: 21201418978400 can be written as Twenty-one trillion, two hundred one billion, four hundred eighteen million, nine hundred seventy-eight thousand, four hundred.

Scientific notation

• Scientific notation: 2.12014189784 × 10¹³

Factors of 21201418978400

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 234529091

Divisors of 21201418978400

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 5 8 10 16 20 25 32 40 50 80 100 113 160 200 226 400 452 565 800 904 1130 1808 2260 2825 3616 4520 5650 9040 11300 18080 22600 45200 90400 234528971 469057942 938115884 1172644855 1876231768 2345289710 3752463536 4690579420 5863224275 7504927072 9381158840 11726448550 18762317680 23452897100 26501773723 37524635360 46905794200 53003547446 93811588400 106007094892 132508868615 187623176800 212014189784 265017737230 424028379568 530035474460 662544343075 848056759136 1060070948920 1325088686150 2120141897840 2650177372300 4240283795680 5300354744600 10600709489200 21201418978400
• Sum of all divisors σ(n): 52215999384024
• Sum of proper divisors (its aliquot sum) s(n): 31014580405624
• 21201418978400 is an abundant number, because the sum of its proper divisors (31014580405624) is greater than itself. Its abundance is 9813161427224

Bases of 21201418978400

• Binary: 100110100100001010111000011000000010001100000₂
• Hexadecimal: 0x1348570C0460
• Base-36: 7IJSPGE3K

Squares and roots of 21201418978400

• 21201418978400 squared (21201418978400²) is 449500166697659699666560000
• 21201418978400 cubed (21201418978400³) is 9530041365017726011375449335842304000000
• The square root of 21201418978400 is 4604499.8619176871
• The cube root of 21201418978400 is 27677.1675500993

Scales and comparisons

• 21,201,418,978,400 seconds is equal to 674,139 years, 28 weeks, 1 day, 17 hours, 33 minutes, 20 seconds.
• To count from 1 to 21,201,418,978,400 would take you about one million, six hundred eighty-five thousand, three hundred forty-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 21201418978400 cubic inches would be around 2306.4 feet tall.

Recreational maths with 21201418978400

• 21201418978400 backwards is 00487981410212
• The number of decimal digits it has is: 14
• The sum of 21201418978400's digits is 47
• More coming soon!