21423903372

Names of 21423903372

• Cardinal: 21423903372 can be written as Twenty-one billion, four hundred twenty-three million, nine hundred three thousand, three hundred seventy-two.

Scientific notation

• Scientific notation: 2.1423903372 × 10¹⁰

Factors of 21423903372

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7650

Divisors of 21423903372

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 107 214 321 428 642 829 963 1284 1658 1926 2487 3316 3852 4974 6709 7461 9948 13418 14922 20127 26836 29844 40254 60381 80508 88703 120762 177406 241524 266109 354812 532218 717863 798327 1064436 1435726 1596654 2153589 2871452 3193308 4307178 5561761 6460767 8614356 11123522 12921534 16685283 22247044 25843068 33370566 50055849 66741132 100111698 200223396 595108427 1190216854 1785325281 2380433708 3570650562 5355975843 7141301124 10711951686 21423903372
• Sum of all divisors σ(n): 54735080400
• Sum of proper divisors (its aliquot sum) s(n): 33311177028
• 21423903372 is an abundant number, because the sum of its proper divisors (33311177028) is greater than itself. Its abundance is 11887273656

Bases of 21423903372

• Binary: 10011111100111101101101001010001100₂
• Hexadecimal: 0x4FCF6D28C
• Base-36: 9UB8LN0

Squares and roots of 21423903372

• 21423903372 squared (21423903372²) is 458983635692792970384
• 21423903372 cubed (21423903372³) is 9833221060411646874307673734848
• The square root of 21423903372 is 146369.0656252201
• The cube root of 21423903372 is 2777.3644160129

Scales and comparisons

• 21,423,903,372 seconds is equal to 681 years, 11 weeks, 20 hours, 16 minutes, 12 seconds.
• To count from 1 to 21,423,903,372 would take you about one thousand, three hundred sixty-two 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 21423903372 cubic inches would be around 231.4 feet tall.

Recreational maths with 21423903372

• 21423903372 backwards is 27330932412
• 21423903372 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21423903372's digits is 36
• More coming soon!