18129408

Names of 18129408

• Cardinal: 18129408 can be written as Eighteen million, one hundred twenty-nine thousand, four hundred eight.

Scientific notation

• Scientific notation: 1.8129408 × 10⁷

Factors of 18129408

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 82

Divisors of 18129408

• Number of divisors d(n): 160
• Complete list of divisors:
  1 2 3 4 6 8 11 12 16 22 24 29 32 33 37 44 48 58 64 66 74 87 88 96 111 116 128 132 148 174 176 192 222 232 256 264 296 319 348 352 384 407 444 464 512 528 592 638 696 704 768 814 888 928 957 1056 1073 1184 1221 1276 1392 1408 1536 1628 1776 1856 1914 2112 2146 2368 2442 2552 2784 2816 3219 3256 3552 3712 3828 4224 4292 4736 4884 5104 5568 5632 6438 6512 7104 7424 7656 8448 8584 9472 9768 10208 11136 11803 12876 13024 14208 14848 15312 16896 17168 18944 19536 20416 22272 23606 25752 26048 28416 30624 34336 35409 39072 40832 44544 47212 51504 52096 56832 61248 68672 70818 78144 81664 94424 103008 104192 122496 137344 141636 156288 163328 188848 206016 208384 244992 274688 283272 312576 377696 412032 489984 549376 566544 625152 755392 824064 1133088 1510784 1648128 2266176 3021568 4532352 6043136 9064704 18129408
• Sum of all divisors σ(n): 55978560
• Sum of proper divisors (its aliquot sum) s(n): 37849152
• 18129408 is an abundant number, because the sum of its proper divisors (37849152) is greater than itself. Its abundance is 19719744

Bases of 18129408

• Binary: 1000101001010001000000000₂
• Hexadecimal: 0x114A200
• Base-36: ASKQO

Squares and roots of 18129408

• 18129408 squared (18129408²) is 328675434430464
• 18129408 cubed (18129408³) is 5958691050367129485312
• The square root of 18129408 is 4257.8642533551
• The cube root of 18129408 is 262.7006864415

Scales and comparisons

• 18,129,408 seconds is equal to 29 weeks, 6 days, 19 hours, 56 minutes, 48 seconds.
• To count from 1 to 18,129,408 would take you about forty-four 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 18129408 cubic inches would be around 21.9 feet tall.

Recreational maths with 18129408

• 18129408 backwards is 80492181
• 18129408 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 18129408's digits is 33
• More coming soon!