14807
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 17136
- Proper Divisor Sum (Aliquot Sum)
- 2329
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 12672
- Möbius Function
- -1
- Radical
- 14807
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 195
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- For n>0, a(n) is the least quasi-Carmichael number to base n; a(0) = least composite squarefree integer.at n=12A029590
- Numbers having four 2's in base 9.at n=20A043464
- Engel expansion of log(3) = 1.09861... .at n=10A059181
- Expansion of 1/((1-x^2*c(x))(1-x-2x^2)) where c(x) is the g.f. of A000108.at n=11A135582
- Members of A038512 of the form k, k+2, k+6, k+8.at n=14A155511
- The smallest magic constant of an n X n magic square with distinct prime entries.at n=14A164843
- Numbers of ways in which a unit disc can be dissected into 6n curvilinear triangles, at least one of which does not contain the center.at n=26A193362
- Numbers n such that (n-1)^3 + (n+1)^3 is a taxi-cab number (A001235).at n=35A272910
- Wiener index for the n-Andrásfai graph.at n=44A292018
- Number of noncrossing partitions of an n-set up to rotation and reflection with all blocks having a prime number of elements.at n=18A303875
- a(n) = n * Sum_{d|n} sigma(d)^3 / d.at n=14A344043
- Number of integer partitions of n whose product is greater than the product of their multiplicities.at n=35A353505