18993420

Names of 18993420

• Cardinal: 18993420 can be written as Eighteen million, nine hundred ninety-three thousand, four hundred twenty.

Scientific notation

• Scientific notation: 1.899342 × 10⁷

Factors of 18993420

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2096

Divisors of 18993420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 17 18 20 27 30 34 36 45 51 54 60 68 85 90 102 108 135 153 170 180 204 255 270 306 340 459 510 540 612 765 918 1020 1530 1836 2069 2295 3060 4138 4590 6207 8276 9180 10345 12414 18621 20690 24828 31035 35173 37242 41380 55863 62070 70346 74484 93105 105519 111726 124140 140692 175865 186210 211038 223452 279315 316557 351730 372420 422076 527595 558630 633114 703460 949671 1055190 1117260 1266228 1582785 1899342 2110380 3165570 3798684 4748355 6331140 9496710 18993420
• Sum of all divisors σ(n): 62596800
• Sum of proper divisors (its aliquot sum) s(n): 43603380
• 18993420 is an abundant number, because the sum of its proper divisors (43603380) is greater than itself. Its abundance is 24609960

Bases of 18993420

• Binary: 1001000011101000100001100₂
• Hexadecimal: 0x121D10C
• Base-36: BB3F0

Squares and roots of 18993420

• 18993420 squared (18993420²) is 360750003296400
• 18993420 cubed (18993420³) is 6851876327609909688000
• The square root of 18993420 is 4358.1441004171
• The cube root of 18993420 is 266.8093576615

Scales and comparisons

• 18,993,420 seconds is equal to 31 weeks, 2 days, 19 hours, 57 minutes.
• To count from 1 to 18,993,420 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 18993420 cubic inches would be around 22.2 feet tall.

Recreational maths with 18993420

• 18993420 backwards is 02439981
• 18993420 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18993420's digits is 36
• More coming soon!