145138770

Names of 145138770

• Cardinal: 145138770 can be written as One hundred forty-five million, one hundred thirty-eight thousand, seven hundred seventy.

Scientific notation

• Scientific notation: 1.4513877 × 10⁸

Factors of 145138770

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1931

Divisors of 145138770

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 41 42 45 54 63 70 82 90 105 123 126 135 189 205 210 246 270 287 315 369 378 410 574 615 630 738 861 945 1107 1230 1435 1722 1845 1873 1890 2214 2583 2870 3690 3746 4305 5166 5535 5619 7749 8610 9365 11070 11238 12915 13111 15498 16857 18730 25830 26222 28095 33714 38745 39333 50571 56190 65555 76793 77490 78666 84285 101142 117999 131110 153586 168570 196665 230379 235998 252855 353997 383965 393330 460758 505710 537551 589995 691137 707994 767930 1075102 1151895 1179990 1382274 1612653 1769985 2073411 2303790 2687755 3225306 3455685 3539970 4146822 4837959 5375510 6911370 8063265 9675918 10367055 14513877 16126530 20734110 24189795 29027754 48379590 72569385 145138770
• Sum of all divisors σ(n): 453358080
• Sum of proper divisors (its aliquot sum) s(n): 308219310
• 145138770 is an abundant number, because the sum of its proper divisors (308219310) is greater than itself. Its abundance is 163080540

Bases of 145138770

• Binary: 1000101001101010010001010010₂
• Hexadecimal: 0x8A6A452
• Base-36: 2EETSI

Squares and roots of 145138770

• 145138770 squared (145138770²) is 21065262557112900
• 145138770 cubed (145138770³) is 3057386297266421057133000
• The square root of 145138770 is 12047.3553114367
• The cube root of 145138770 is 525.5263293045

Scales and comparisons

• 145,138,770 seconds is equal to 4 years, 31 weeks, 6 days, 20 hours, 19 minutes, 30 seconds.
• To count from 1 to 145,138,770 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 145138770 cubic inches would be around 43.8 feet tall.

Recreational maths with 145138770

• 145138770 backwards is 077831541
• The number of decimal digits it has is: 9
• The sum of 145138770's digits is 36
• More coming soon!