11330
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 22464
- Proper Divisor Sum (Aliquot Sum)
- 11134
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4080
- Möbius Function
- 1
- Radical
- 11330
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 130
- 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
- yes
- Odd
- no
Appears in sequences
- Triangle read by rows: number of P-graphs by number of edges and number of non-root nodes.at n=24A011268
- a(n) = (d(n)-r(n))/2, where d = A026049 and r is the periodic sequence with fundamental period (1,0,0,1).at n=36A026050
- Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n+2)/3.at n=30A048081
- Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n+3)/3.at n=30A048092
- Number of horizontally convex n-ominoes in which the top row has exactly 1 square.at n=9A049219
- Sum of a(n) terms of 1/k^(5/6) first exceeds n.at n=23A056181
- a(n) = n^2 + (n^2 with digits reversed).at n=43A061226
- Numbers k such that k + the reversal of k is a square.at n=39A061230
- Concatenation of n-th prime and n in decimal notation.at n=29A075110
- Expansion of x^4*(2+x)/((1+x)*(1-x)^5).at n=18A082289
- Expansion of (1+x+x^2)/((1+x^2)*(1+x)^4*(1-x)^5).at n=37A082290
- Quotients associated with A097982.at n=27A098024
- Number of bipartite planar graphs with 2n nodes and at least one zero eigenvector.at n=9A133236
- Number of intersection points outside the n-gon of all lines through pairs of vertices of a regular n-gon.at n=19A146213
- Number of 3-step one space leftwards or up, two space rightwards or down asymmetric rook's tours on an n X n board summed over all starting positions.at n=27A187298
- Describe 10^n. Also called the "Say What You See" or "Look and Say" sequence LS(10^n).at n=33A191111
- Numbers of rank 10 in the poset of lunar numbers.at n=48A191752
- Position where 10^n-1 occurs in the Kaprekar sequence A006886.at n=29A193992
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 841", based on the 5-celled von Neumann neighborhood.at n=21A273685
- Numbers k such that there are exactly 9 numbers j for which binomial(k, floor(k/2)) / binomial(k,j) is an integer, i.e., A080383(k) = 9.at n=3A327431