14911
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 17024
- Proper Divisor Sum (Aliquot Sum)
- 2113
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 12960
- Möbius Function
- -1
- Radical
- 14911
- 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
- 71
- 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
- Deceptive nonprimes: composite numbers k that divide the repunit R_{k-1}.at n=25A000864
- MacMahon's generalized sum of divisors function.at n=45A002127
- The number of n X n (0,1)-matrices with a 1-width of 1.at n=3A005019
- Rhombic dodecahedral numbers: a(n) = n^4 - (n - 1)^4.at n=15A005917
- Pseudoprimes to base 10.at n=41A005939
- a(n) = n*(n^2 + 1)/2.at n=31A006003
- Expansion of Product_{k>=1} (1 - x^k)^13.at n=25A010820
- Strong pseudoprimes to base 100.at n=26A020326
- a(n) = n*(31*n + 1)/2.at n=31A022289
- Discriminants of quintic fields with 2 complex conjugates (negated).at n=23A023684
- Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026659.at n=12A026668
- "DGK" (bracelet, element, unlabeled) transform of 2,1,1,1,...at n=29A032232
- Gaps of 4 in sequence A038593 (lower terms).at n=2A038647
- a(n) = (n + 2)*(2*n^2 - n + 3)/6.at n=35A056520
- a(n) = 16^n - 15^n.at n=4A061252
- Sum of the elements in any transversal of a prime(n) X prime(n) array containing the numbers from 1 to prime(n)^2 in standard order.at n=10A066886
- Numbers k such that phi(sigma(k)+k) = sigma(k).at n=14A068366
- Row sums of triangle A074135.at n=30A074132
- Sum of terms in each group in A074147.at n=30A074149
- Numbers k such that binomial(prime(k), k) is divisible by k^2.at n=40A081384