145489890

Names of 145489890

• Cardinal: 145489890 can be written as One hundred forty-five million, four hundred eighty-nine thousand, eight hundred ninety.

Scientific notation

• Scientific notation: 1.4548989 × 10⁸

Factors of 145489890

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 556

Divisors of 145489890

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 7 10 13 14 15 21 26 30 35 39 42 65 70 78 91 105 130 137 182 195 210 273 274 389 390 411 455 546 685 778 822 910 959 1167 1365 1370 1781 1918 1945 2055 2334 2723 2730 2877 3562 3890 4110 4795 5057 5343 5446 5754 5835 8169 8905 9590 10114 10686 11670 12467 13615 14385 15171 16338 17810 24934 25285 26715 27230 28770 30342 35399 37401 40845 50570 53293 53430 62335 70798 74802 75855 81690 106197 106586 124670 151710 159879 176995 187005 212394 266465 319758 353990 373051 374010 530985 532930 692809 746102 799395 1061970 1119153 1385618 1598790 1865255 2078427 2238306 3464045 3730510 4156854 4849663 5595765 6928090 9699326 10392135 11191530 14548989 20784270 24248315 29097978 48496630 72744945 145489890
• Sum of all divisors σ(n): 434004480
• Sum of proper divisors (its aliquot sum) s(n): 288514590
• 145489890 is an abundant number, because the sum of its proper divisors (288514590) is greater than itself. Its abundance is 143024700

Bases of 145489890

• Binary: 1000101010111111111111100010₂
• Hexadecimal: 0x8ABFFE2
• Base-36: 2EMCPU

Squares and roots of 145489890

• 145489890 squared (145489890²) is 21167308092212100
• 145489890 cubed (145489890³) is 3079629325932048285669000
• The square root of 145489890 is 12061.9190015519
• The cube root of 145489890 is 525.9497728019

Scales and comparisons

• 145,489,890 seconds is equal to 4 years, 32 weeks, 3 days, 21 hours, 51 minutes, 30 seconds.
• To count from 1 to 145,489,890 would take you about six 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 145489890 cubic inches would be around 43.8 feet tall.

Recreational maths with 145489890

• 145489890 backwards is 098984541
• The number of decimal digits it has is: 9
• The sum of 145489890's digits is 48
• More coming soon!