18941440

Names of 18941440

• Cardinal: 18941440 can be written as Eighteen million, nine hundred forty-one thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.894144 × 10⁷

Factors of 18941440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 165

Divisors of 18941440

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 40 49 56 64 70 80 98 112 128 140 151 160 196 224 245 256 280 302 320 392 448 490 512 560 604 640 755 784 896 980 1057 1120 1208 1280 1510 1568 1792 1960 2114 2240 2416 2560 3020 3136 3584 3920 4228 4480 4832 5285 6040 6272 7399 7840 8456 8960 9664 10570 12080 12544 14798 15680 16912 17920 19328 21140 24160 25088 29596 31360 33824 36995 38656 42280 48320 59192 62720 67648 73990 77312 84560 96640 118384 125440 135296 147980 169120 193280 236768 270592 295960 338240 386560 473536 541184 591920 676480 947072 1183840 1352960 1894144 2367680 2705920 3788288 4735360 9470720 18941440
• Sum of all divisors σ(n): 53179632
• Sum of proper divisors (its aliquot sum) s(n): 34238192
• 18941440 is an abundant number, because the sum of its proper divisors (34238192) is greater than itself. Its abundance is 15296752

Bases of 18941440

• Binary: 1001000010000011000000000₂
• Hexadecimal: 0x1210600
• Base-36: B9ZB4

Squares and roots of 18941440

• 18941440 squared (18941440²) is 358778149273600
• 18941440 cubed (18941440³) is 6795774787776937984000
• The square root of 18941440 is 4352.1764670105
• The cube root of 18941440 is 266.5657395841

Scales and comparisons

• 18,941,440 seconds is equal to 31 weeks, 2 days, 5 hours, 30 minutes, 40 seconds.
• To count from 1 to 18,941,440 would take you about forty-six 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 18941440 cubic inches would be around 22.2 feet tall.

Recreational maths with 18941440

• 18941440 backwards is 04414981
• The number of decimal digits it has is: 8
• The sum of 18941440's digits is 31
• More coming soon!