8129842938

Names of 8129842938

• Cardinal: 8129842938 can be written as Eight billion, one hundred twenty-nine million, eight hundred forty-two thousand, nine hundred thirty-eight.

Scientific notation

• Scientific notation: 8.129842938 × 10⁹

Factors of 8129842938

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 14202

Divisors of 8129842938

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 9 14 18 21 27 31 42 49 54 62 63 93 98 126 147 186 189 217 279 294 343 378 434 441 558 651 686 837 882 1029 1302 1323 1519 1674 1953 2058 2646 3038 3087 3906 4557 5859 6174 9114 9261 10633 11718 13671 14159 18522 21266 27342 28318 31899 41013 42477 63798 82026 84954 95697 99113 127431 191394 198226 254862 287091 297339 382293 438929 574182 594678 693791 764586 877858 892017 1316787 1387582 1784034 2081373 2633574 2676051 3072503 3950361 4162746 4856537 5352102 6145006 6244119 7900722 9217509 9713074 11851083 12488238 14569611 18435018 18732357 21507521 23702166 27652527 29139222 37464714 43015042 43708833 55305054 64522563 82957581 87417666 129045126 131126499 150552647 165915162 193567689 262252998 301105294 387135378 451657941 580703067 903315882 1161406134 1354973823 2709947646 4064921469 8129842938
• Sum of all divisors σ(n): 21749760000
• Sum of proper divisors (its aliquot sum) s(n): 13619917062
• 8129842938 is an abundant number, because the sum of its proper divisors (13619917062) is greater than itself. Its abundance is 5490074124

Bases of 8129842938

• Binary: 111100100100100111000111011111010₂
• Hexadecimal: 0x1E4938EFA
• Base-36: 3QGAQYI

Squares and roots of 8129842938

• 8129842938 squared (8129842938²) is 66094346196548471844
• 8129842938 cubed (8129842938³) is 537336653667736753795635237672
• The square root of 8129842938 is 90165.6416713153
• The cube root of 8129842938 is 2010.7622281773

Scales and comparisons

• 8,129,842,938 seconds is equal to 258 years, 26 weeks, 1 day, 9 hours, 42 minutes, 18 seconds.
• To count from 1 to 8,129,842,938 would take you about five hundred seventeen 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 8129842938 cubic inches would be around 167.6 feet tall.

Recreational maths with 8129842938

• 8129842938 backwards is 8392489218
• 8129842938 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 8129842938's digits is 54
• More coming soon!