385140

Names of 385140

• Cardinal: 385140 can be written as Three hundred eighty-five thousand, one hundred forty.

Scientific notation

• Scientific notation: 3.8514 × 10⁵

Factors of 385140

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 148

Divisors of 385140

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 49 60 70 84 98 105 131 140 147 196 210 245 262 294 393 420 490 524 588 655 735 786 917 980 1310 1470 1572 1834 1965 2620 2751 2940 3668 3930 4585 5502 6419 7860 9170 11004 12838 13755 18340 19257 25676 27510 32095 38514 55020 64190 77028 96285 128380 192570 385140
• Sum of all divisors σ(n): 1264032
• Sum of proper divisors (its aliquot sum) s(n): 878892
• 385140 is an abundant number, because the sum of its proper divisors (878892) is greater than itself. Its abundance is 493752

Bases of 385140

• Binary: 1011110000001110100₂
• Hexadecimal: 0x5E074
• Base-36: 896C

Squares and roots of 385140

• 385140 squared (385140²) is 148332819600
• 385140 cubed (385140³) is 57128902140744000
• The square root of 385140 is 620.5964872605
• The cube root of 385140 is 72.7566803421

Scales and comparisons

• 385,140 seconds is equal to 4 days, 10 hours, 59 minutes.
• To count from 1 to 385,140 would take you about four days.

  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 385140 cubic inches would be around 6.1 feet tall.

Recreational maths with 385140

• 385140 backwards is 041583
• 385140 is a Harshad number.
• The number of decimal digits it has is: 6
• The sum of 385140's digits is 21
• More coming soon!