818139140

Names of 818139140

• Cardinal: 818139140 can be written as Eight hundred eighteen million, one hundred thirty-nine thousand, one hundred forty.

Scientific notation

• Scientific notation: 8.1813914 × 10⁸

Factors of 818139140

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 407

Divisors of 818139140

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 35 52 65 70 91 130 140 151 169 182 229 260 302 338 364 455 458 604 676 755 845 910 916 1057 1145 1183 1510 1603 1690 1820 1963 2114 2290 2366 2977 3020 3206 3380 3926 4228 4580 4732 5285 5915 5954 6412 7852 8015 9815 10570 11830 11908 13741 14885 16030 19630 20839 21140 23660 25519 27482 29770 32060 34579 38701 39260 41678 51038 54964 59540 68705 69158 77402 83356 102076 104195 127595 137410 138316 154804 172895 178633 193505 208390 242053 255190 270907 274820 345790 357266 387010 416780 449527 484106 510380 541814 691580 714532 774020 893165 899054 968212 1083628 1210265 1354535 1786330 1798108 2247635 2420530 2709070 3146689 3572660 4495270 4841060 5418140 5843851 6293378 8990540 11687702 12586756 15733445 23375404 29219255 31466890 40906957 58438510 62933780 81813914 116877020 163627828 204534785 409069570 818139140
• Sum of all divisors σ(n): 2149620480
• Sum of proper divisors (its aliquot sum) s(n): 1331481340
• 818139140 is an abundant number, because the sum of its proper divisors (1331481340) is greater than itself. Its abundance is 513342200

Bases of 818139140

• Binary: 110000110000111101000000000100₂
• Hexadecimal: 0x30C3D004
• Base-36: DJ3K78

Squares and roots of 818139140

• 818139140 squared (818139140²) is 669351652399939600
• 818139140 cubed (818139140³) is 547622785252065520395944000
• The square root of 818139140 is 28603.1316467271
• The cube root of 818139140 is 935.2815989579

Scales and comparisons

• 818,139,140 seconds is equal to 26 years, 5 days, 4 hours, 52 minutes, 20 seconds.
• To count from 1 to 818,139,140 would take you about thirty-nine 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 818139140 cubic inches would be around 77.9 feet tall.

Recreational maths with 818139140

• 818139140 backwards is 041931818
• 818139140 is a Harshad number.
• The number of decimal digits it has is: 9
• The sum of 818139140's digits is 35
• More coming soon!