51138864

Names of 51138864

• Cardinal: 51138864 can be written as Fifty-one million, one hundred thirty-eight thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 5.1138864 × 10⁷

Factors of 51138864

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1891

Divisors of 51138864

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 7 8 9 12 14 16 18 21 24 27 28 36 42 48 54 56 63 72 81 84 108 112 126 144 162 168 189 216 243 252 324 336 378 432 486 504 567 648 756 972 1008 1134 1296 1512 1701 1879 1944 2268 3024 3402 3758 3888 4536 5637 6804 7516 9072 11274 13153 13608 15032 16911 22548 26306 27216 30064 33822 39459 45096 50733 52612 67644 78918 90192 101466 105224 118377 135288 152199 157836 202932 210448 236754 270576 304398 315672 355131 405864 456597 473508 608796 631344 710262 811728 913194 947016 1065393 1217592 1420524 1826388 1894032 2130786 2435184 2841048 3196179 3652776 4261572 5682096 6392358 7305552 8523144 12784716 17046288 25569432 51138864
• Sum of all divisors σ(n): 169711360
• Sum of proper divisors (its aliquot sum) s(n): 118572496
• 51138864 is an abundant number, because the sum of its proper divisors (118572496) is greater than itself. Its abundance is 67433632

Bases of 51138864

• Binary: 11000011000101000100110000₂
• Hexadecimal: 0x30C5130
• Base-36: UG300

Squares and roots of 51138864

• 51138864 squared (51138864²) is 2615183411210496
• 51138864 cubed (51138864³) is 133737508800949630316544
• The square root of 51138864 is 7151.1442441053
• The cube root of 51138864 is 371.1792518995

Scales and comparisons

• 51,138,864 seconds is equal to 1 year, 32 weeks, 3 days, 21 hours, 14 minutes, 24 seconds.
• To count from 1 to 51,138,864 would take you about two 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 51138864 cubic inches would be around 30.9 feet tall.

Recreational maths with 51138864

• 51138864 backwards is 46883115
• 51138864 is a Harshad number.
• The number of decimal digits it has is: 8
• The sum of 51138864's digits is 36
• More coming soon!