1390939668

Names of 1390939668

• Cardinal: 1390939668 can be written as One billion, three hundred ninety million, nine hundred thirty-nine thousand, six hundred sixty-eight.

Scientific notation

• Scientific notation: 1.390939668 × 10⁹

Factors of 1390939668

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 348125

Divisors of 1390939668

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 9 12 18 27 36 37 54 74 108 111 148 222 333 444 666 999 1332 1998 3996 348083 696166 1044249 1392332 2088498 3132747 4176996 6265494 9398241 12530988 12879071 18796482 25758142 37592964 38637213 51516284 77274426 115911639 154548852 231823278 347734917 463646556 695469834 1390939668
• Sum of all divisors σ(n): 3703613760
• Sum of proper divisors (its aliquot sum) s(n): 2312674092
• 1390939668 is an abundant number, because the sum of its proper divisors (2312674092) is greater than itself. Its abundance is 921734424

Bases of 1390939668

• Binary: 1010010111010000000111000010100₂
• Hexadecimal: 0x52E80E14
• Base-36: N04NX0

Squares and roots of 1390939668

• 1390939668 squared (1390939668²) is 1934713160015950224
• 1390939668 cubed (1390939668³) is 2691069280467816679275085632
• The square root of 1390939668 is 37295.3035649263
• The cube root of 1390939668 is 1116.2704570545

Scales and comparisons

• 1,390,939,668 seconds is equal to 44 years, 11 weeks, 5 days, 20 hours, 7 minutes, 48 seconds.
• To count from 1 to 1,390,939,668 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 1390939668 cubic inches would be around 93 feet tall.

Recreational maths with 1390939668

• 1390939668 backwards is 8669390931
• 1390939668 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1390939668's digits is 54
• More coming soon!