40239990

Names of 40239990

• Cardinal: 40239990 can be written as Forty million, two hundred thirty-nine thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 4.023999 × 10⁷

Factors of 40239990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 215

Divisors of 40239990

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 21 27 30 35 42 45 47 54 63 70 81 90 94 105 126 135 141 151 162 189 210 235 270 282 302 315 329 378 405 423 453 470 567 630 658 705 755 810 846 906 945 987 1057 1134 1269 1359 1410 1510 1645 1890 1974 2114 2115 2265 2538 2718 2835 2961 3171 3290 3807 4077 4230 4530 4935 5285 5670 5922 6342 6345 6795 7097 7614 8154 8883 9513 9870 10570 12231 12690 13590 14194 14805 15855 17766 19026 19035 20385 21291 24462 26649 28539 29610 31710 35485 38070 40770 42582 44415 47565 49679 53298 57078 61155 63873 70970 85617 88830 95130 99358 106455 122310 127746 133245 142695 149037 171234 191619 212910 248395 266490 285390 298074 319365 383238 428085 447111 496790 574857 638730 745185 856170 894222 958095 1149714 1341333 1490370 1916190 2235555 2682666 2874285 4023999 4471110 5748570 6706665 8047998 13413330 20119995 40239990
• Sum of all divisors σ(n): 127125504
• Sum of proper divisors (its aliquot sum) s(n): 86885514
• 40239990 is an abundant number, because the sum of its proper divisors (86885514) is greater than itself. Its abundance is 46645524

Bases of 40239990

• Binary: 10011001100000001101110110₂
• Hexadecimal: 0x2660376
• Base-36: NYHDI

Squares and roots of 40239990

• 40239990 squared (40239990²) is 1619256795200100
• 40239990 cubed (40239990³) is 65158877246284071999000
• The square root of 40239990 is 6343.4998226531
• The cube root of 40239990 is 342.6777878887

Scales and comparisons

• 40,239,990 seconds is equal to 1 year, 14 weeks, 3 days, 17 hours, 46 minutes, 30 seconds.
• To count from 1 to 40,239,990 would take you about forty-seven weeks!

  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 40239990 cubic inches would be around 28.6 feet tall.

Recreational maths with 40239990

• 40239990 backwards is 09993204
• The number of decimal digits it has is: 8
• The sum of 40239990's digits is 36
• More coming soon!