1385446640

Names of 1385446640

• Cardinal: 1385446640 can be written as One billion, three hundred eighty-five million, four hundred forty-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.38544664 × 10⁹

Factors of 1385446640

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1732

Divisors of 1385446640

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 61 80 122 193 244 305 386 488 610 772 965 976 1220 1471 1544 1930 2440 2942 3088 3860 4880 5884 7355 7720 11768 11773 14710 15440 23536 23546 29420 47092 58840 58865 89731 94184 117680 117730 179462 188368 235460 283903 358924 448655 470920 567806 717848 897310 941840 1135612 1419515 1435696 1794620 2271224 2839030 3589240 4542448 5678060 7178480 11356120 17318083 22712240 34636166 69272332 86590415 138544664 173180830 277089328 346361660 692723320 1385446640
• Sum of all divisors σ(n): 3293170176
• Sum of proper divisors (its aliquot sum) s(n): 1907723536
• 1385446640 is an abundant number, because the sum of its proper divisors (1907723536) is greater than itself. Its abundance is 522276896

Bases of 1385446640

• Binary: 1010010100101000011110011110000₂
• Hexadecimal: 0x52943CF0
• Base-36: MWUXGW

Squares and roots of 1385446640

• 1385446640 squared (1385446640²) is 1919462392287289600
• 1385446640 cubed (1385446640³) is 2659312722000787291026944000
• The square root of 1385446640 is 37221.5883594455
• The cube root of 1385446640 is 1114.7990790009

Scales and comparisons

• 1,385,446,640 seconds is equal to 44 years, 2 weeks, 5 days, 6 hours, 17 minutes, 20 seconds.
• To count from 1 to 1,385,446,640 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 1385446640 cubic inches would be around 92.9 feet tall.

Recreational maths with 1385446640

• 1385446640 backwards is 0466445831
• The number of decimal digits it has is: 10
• The sum of 1385446640's digits is 41
• More coming soon!