14227
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
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 14616
- Proper Divisor Sum (Aliquot Sum)
- 389
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 13840
- Möbius Function
- 1
- Radical
- 14227
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 50
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- Composite and every divisor (except 1) contains the digit 4.at n=2A062670
- Matrix inverse of triangle A099602, read by rows, where row n of A099602 equals the inverse binomial transform of column n of the triangle of trinomial coefficients (A027907).at n=69A104495
- Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1100-0111-0011 pattern in any orientation.at n=10A147212
- Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-0111-0011 pattern in any orientation.at n=22A147214
- Numbers k such that 9k+4 are terms in A072841.at n=35A175518
- Riordan array ( (1/(1-x))^m , x*A000108(x) ), m = 3.at n=57A185944
- G.f. satisfies A(x) = (1 + x*A(x)^2) * (1 + x*A(x)^4).at n=5A215715
- Number of partitions of n such that the number of parts is a part and the number of distinct parts is not a part.at n=49A241379
- Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=28A254906
- Number of integers in n-th generation of tree T(2/3) defined in Comments.at n=37A274145
- The maximum number of coins that can be processed in n weighings of an adaptive strategy that all are real (and identical) except for one LHR-coin starting in an unknown state.at n=12A279685
- Number of topologically distinct sets of n circles with one pair intersecting.at n=8A280786
- Triangle read by rows: number of topologically distinct sets of n circles with one pair intersecting, by number of factors.at n=46A280787
- a(n) is the index of the Stieltjes constant at the beginning of the first set of exactly n successive constants of the same sign.at n=14A354878
- Triangle read by rows: T(n,k) is the number of n-node connected unsensed planar maps with an external face and k triangular internal faces, n >= 3, 1 <= k <= 2*n - 5.at n=77A378103