145139040

Names of 145139040

• Cardinal: 145139040 can be written as One hundred forty-five million, one hundred thirty-nine thousand and forty.

Scientific notation

• Scientific notation: 1.4513904 × 10⁸

Factors of 145139040

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 3743

Divisors of 145139040

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 72 80 81 90 96 108 120 135 144 160 162 180 216 240 243 270 288 324 360 405 432 480 486 540 648 720 810 864 972 1080 1215 1296 1440 1620 1944 2160 2430 2592 3240 3733 3888 4320 4860 6480 7466 7776 9720 11199 12960 14932 18665 19440 22398 29864 33597 37330 38880 44796 55995 59728 67194 74660 89592 100791 111990 119456 134388 149320 167985 179184 201582 223980 268776 298640 302373 335970 358368 403164 447960 503955 537552 597280 604746 671940 806328 895920 907119 1007910 1075104 1209492 1343880 1511865 1612656 1791840 1814238 2015820 2418984 2687760 3023730 3225312 3628476 4031640 4535595 4837968 5375520 6047460 7256952 8063280 9071190 9675936 12094920 14513904 16126560 18142380 24189840 29027808 36284760 48379680 72569520 145139040
• Sum of all divisors σ(n): 513768528
• Sum of proper divisors (its aliquot sum) s(n): 368629488
• 145139040 is an abundant number, because the sum of its proper divisors (368629488) is greater than itself. Its abundance is 223490448

Bases of 145139040

• Binary: 1000101001101010010101100000₂
• Hexadecimal: 0x8A6A560
• Base-36: 2EEU00

Squares and roots of 145139040

• 145139040 squared (145139040²) is 21065340932121600
• 145139040 cubed (145139040³) is 3057403360160834187264000
• The square root of 145139040 is 12047.3665172103
• The cube root of 145139040 is 525.5266551813

Scales and comparisons

• 145,139,040 seconds is equal to 4 years, 31 weeks, 6 days, 20 hours, 24 minutes.
• To count from 1 to 145,139,040 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 145139040 cubic inches would be around 43.8 feet tall.

Recreational maths with 145139040

• 145139040 backwards is 040931541
• 145139040 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 145139040's digits is 27
• More coming soon!