40081440

Names of 40081440

• Cardinal: 40081440 can be written as Forty million, eighty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 4.008144 × 10⁷

Factors of 40081440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 247

Divisors of 40081440

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 79 80 84 96 105 112 120 140 151 158 160 168 210 224 237 240 280 302 316 336 395 420 453 474 480 553 560 604 632 672 755 790 840 906 948 1057 1106 1120 1185 1208 1264 1510 1580 1659 1680 1812 1896 2114 2212 2265 2370 2416 2528 2765 3020 3160 3171 3318 3360 3624 3792 4228 4424 4530 4740 4832 5285 5530 6040 6320 6342 6636 7248 7584 8295 8456 8848 9060 9480 10570 11060 11929 12080 12640 12684 13272 14496 15855 16590 16912 17696 18120 18960 21140 22120 23858 24160 25368 26544 31710 33180 33824 35787 36240 37920 42280 44240 47716 50736 53088 59645 63420 66360 71574 72480 83503 84560 88480 95432 101472 119290 126840 132720 143148 167006 169120 178935 190864 238580 250509 253680 265440 286296 334012 357870 381728 417515 477160 501018 507360 572592 668024 715740 835030 954320 1002036 1145184 1252545 1336048 1431480 1670060 1908640 2004072 2505090 2672096 2862960 3340120 4008144 5010180 5725920 6680240 8016288 10020360 13360480 20040720 40081440
• Sum of all divisors σ(n): 147087360
• Sum of proper divisors (its aliquot sum) s(n): 107005920
• 40081440 is an abundant number, because the sum of its proper divisors (107005920) is greater than itself. Its abundance is 66924480

Bases of 40081440

• Binary: 10011000111001100000100000₂
• Hexadecimal: 0x2639820
• Base-36: NV31C

Squares and roots of 40081440

• 40081440 squared (40081440²) is 1606521832473600
• 40081440 cubed (40081440³) is 64391708436980649984000
• The square root of 40081440 is 6330.9904438407
• The cube root of 40081440 is 342.2271327293

Scales and comparisons

• 40,081,440 seconds is equal to 1 year, 14 weeks, 1 day, 21 hours, 44 minutes.
• To count from 1 to 40,081,440 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 40081440 cubic inches would be around 28.5 feet tall.

Recreational maths with 40081440

• 40081440 backwards is 04418004
• 40081440 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 40081440's digits is 21
• More coming soon!