11724
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 27384
- Proper Divisor Sum (Aliquot Sum)
- 15660
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3904
- Möbius Function
- 0
- Radical
- 5862
- Omega Function (Ω)
- 4
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 37
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Expansion of (1-x)/(1+x+2*x^3).at n=18A078044
- Matrix cube of triangle A113350.at n=24A113365
- First term of the first run of at least n consecutive numbers in A136110.at n=8A138899
- A156977/3.at n=3A164565
- Number of symmetry classes of 3 X 3 semimagic squares with distinct positive values and magic sum n.at n=45A173725
- Number of partitions of 5n such that cn(1,5) = cn(4,5) and cn(2,5) = cn(3,5).at n=10A202091
- Total number of parts of multiplicity 8 in all partitions of n.at n=41A222708
- Number of self-avoiding walks on the truncated square tiling with n steps.at n=14A249565
- Numbers n such that the decimal expansions of both n and n^2 have 1 as smallest digit and 7 as largest digit.at n=27A257210
- 5-untouchable numbers.at n=26A284187
- The forgotten topological index of the Aztec diamond AZ(n) (see the Ramanes et al. reference, Theorem 2.1).at n=8A292346
- a(n) is the number of distinct resistances that can be produced from a circuit with exactly n unit resistors.at n=11A337517
- Number of ordered triples (a,b,c) of positive integers less than n with the property that n divides a*b*c.at n=41A352078
- Triangle read by rows. T(n, k) = A355776(n, k) + A355777(n, k). Refining A174159, the Euler minus Narayana/Catalan triangle.at n=58A356113