21355110738

Names of 21355110738

• Cardinal: 21355110738 can be written as Twenty-one billion, three hundred fifty-five million, one hundred ten thousand, seven hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1355110738 × 10¹⁰

Factors of 21355110738

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 29388

Divisors of 21355110738

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 6 9 13 18 26 39 78 117 169 234 241 338 482 507 723 1014 1446 1521 2169 3042 3133 4338 6266 9399 18798 28197 29129 40729 56394 58258 81458 87387 122187 174774 244374 262161 366561 378677 524322 733122 757354 1136031 2272062 3408093 4922801 6816186 7020089 9845602 14040178 14768403 21060267 29536806 42120534 44305209 63180801 88610418 91261157 126361602 182522314 273783471 547566942 821350413 1186395041 1642700826 2372790082 3559185123 7118370246 10677555369 21355110738
• Sum of all divisors σ(n): 50311996020
• Sum of proper divisors (its aliquot sum) s(n): 28956885282
• 21355110738 is an abundant number, because the sum of its proper divisors (28956885282) is greater than itself. Its abundance is 7601774544

Bases of 21355110738

• Binary: 10011111000110111010010000101010010₂
• Hexadecimal: 0x4F8DD2152
• Base-36: 9T6A4WI

Squares and roots of 21355110738

• 21355110738 squared (21355110738²) is 456040754632242904644
• 21355110738 cubed (21355110738³) is 9738800816212633693987394467272
• The square root of 21355110738 is 146133.8795009563
• The cube root of 21355110738 is 2774.3885020269

Scales and comparisons

• 21,355,110,738 seconds is equal to 679 years, 1 week, 2 days, 15 hours, 12 minutes, 18 seconds.
• To count from 1 to 21,355,110,738 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 21355110738 cubic inches would be around 231.2 feet tall.

Recreational maths with 21355110738

• 21355110738 backwards is 83701155312
• The number of decimal digits it has is: 11
• The sum of 21355110738's digits is 36
• More coming soon!