1387420398

Names of 1387420398

• Cardinal: 1387420398 can be written as One billion, three hundred eighty-seven million, four hundred twenty thousand, three hundred ninety-eight.

Scientific notation

• Scientific notation: 1.387420398 × 10⁹

Factors of 1387420398

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5309

Divisors of 1387420398

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 6 7 9 13 14 18 21 23 26 39 42 46 49 63 69 78 91 98 117 126 138 147 161 182 207 234 273 294 299 322 414 441 483 546 598 637 819 882 897 966 1127 1274 1449 1638 1794 1911 2093 2254 2691 2898 3381 3822 4186 5261 5382 5733 6279 6762 10143 10522 11466 12558 14651 15783 18837 20286 29302 31566 36827 37674 43953 47349 68393 73654 87906 94698 110481 121003 131859 136786 205179 220962 242006 257789 263718 331443 363009 410358 478751 515578 615537 662886 726018 773367 847021 957502 1089027 1231074 1436253 1546734 1573039 1694042 2178054 2320101 2541063 2872506 3146078 3351257 4308759 4640202 4719117 5082126 5929147 6702514 7623189 8617518 9438234 10053771 11011273 11858294 14157351 15246378 17787441 20107542 22022546 28314702 30161313 33033819 35574882 53362323 60322626 66067638 77078911 99101457 106724646 154157822 198202914 231236733 462473466 693710199 1387420398
• Sum of all divisors σ(n): 3930335136
• Sum of proper divisors (its aliquot sum) s(n): 2542914738
• 1387420398 is an abundant number, because the sum of its proper divisors (2542914738) is greater than itself. Its abundance is 1155494340

Bases of 1387420398

• Binary: 1010010101100100101101011101110₂
• Hexadecimal: 0x52B25AEE
• Base-36: MY18FI

Squares and roots of 1387420398

• 1387420398 squared (1387420398²) is 1924935360786478404
• 1387420398 cubed (1387420398³) is 2670694584386649460296084792
• The square root of 1387420398 is 37248.0925417665
• The cube root of 1387420398 is 1115.3282223273

Scales and comparisons

• 1,387,420,398 seconds is equal to 44 years, 6 weeks, 2 hours, 33 minutes, 18 seconds.
• To count from 1 to 1,387,420,398 would take you about eighty-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 1387420398 cubic inches would be around 92.9 feet tall.

Recreational maths with 1387420398

• 1387420398 backwards is 8930247831
• The number of decimal digits it has is: 10
• The sum of 1387420398's digits is 45
• More coming soon!