18004256388

Names of 18004256388

• Cardinal: 18004256388 can be written as Eighteen billion, four million, two hundred fifty-six thousand, three hundred eighty-eight.

Scientific notation

• Scientific notation: 1.8004256388 × 10¹⁰

Factors of 18004256388

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2061

Divisors of 18004256388

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 6 9 12 18 23 36 37 46 69 74 92 111 138 148 207 222 276 333 359 414 444 666 718 828 851 1077 1332 1436 1637 1702 2154 2553 3231 3274 3404 4308 4911 5106 6462 6548 7659 8257 9822 10212 12924 13283 14733 15318 16514 19644 24771 26566 29466 30636 33028 37651 39849 49542 53132 58932 60569 74313 75302 79698 99084 112953 119547 121138 148626 150604 159396 181707 225906 239094 242276 297252 305509 338859 363414 451812 478188 545121 587683 611018 677718 726828 916527 1090242 1175366 1222036 1355436 1393087 1763049 1833054 2180484 2350732 2749581 2786174 3526098 3666108 4179261 5289147 5499162 5572348 7052196 8358522 10578294 10998324 12537783 13516709 16717044 21156588 21744271 25075566 27033418 40550127 43488542 50151132 54066836 65232813 81100254 86977084 121650381 130465626 162200508 195698439 243300762 260931252 391396878 486601524 500118233 782793756 1000236466 1500354699 2000472932 3000709398 4501064097 6001418796 9002128194 18004256388
• Sum of all divisors σ(n): 48938722560
• Sum of proper divisors (its aliquot sum) s(n): 30934466172
• 18004256388 is an abundant number, because the sum of its proper divisors (30934466172) is greater than itself. Its abundance is 12930209784

Bases of 18004256388

• Binary: 10000110001001000110010011010000100₂
• Hexadecimal: 0x431232684
• Base-36: 89R9P50

Squares and roots of 18004256388

• 18004256388 squared (18004256388²) is 324153248084838806544
• 18004256388 cubed (18004256388³) is 5836138187522407848670108203072
• The square root of 18004256388 is 134179.9403338665
• The cube root of 18004256388 is 2620.9479500067

Scales and comparisons

• 18,004,256,388 seconds is equal to 572 years, 24 weeks, 6 days, 14 hours, 19 minutes, 48 seconds.
• To count from 1 to 18,004,256,388 would take you about one thousand, one hundred forty-four 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 18004256388 cubic inches would be around 218.4 feet tall.

Recreational maths with 18004256388

• 18004256388 backwards is 88365240081
• The number of decimal digits it has is: 11
• The sum of 18004256388's digits is 45
• More coming soon!