1214
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1824
- Proper Divisor Sum (Aliquot Sum)
- 610
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 606
- Möbius Function
- 1
- Radical
- 1214
- 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
- 44
- 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
- yes
- Odd
- no
Appears in sequences
- a(n) = n*a(n-1) + (n-2)*a(n-2), with a(0) = 0, a(1) = 1.at n=6A000153
- Number of n-bead necklaces with beads of 2 colors and primitive period n, when turning over is allowed.at n=15A001371
- a(n) = F(n+2) - 2^[ (n+1)/2 ] - 2^[ n/2 ] + 1.at n=15A005673
- Positions of remoteness 3 in Beans-Don't-Talk.at n=23A005695
- Number of vertex-transitive graphs with n nodes.at n=19A006799
- Shifts left under lcm-convolution with itself.at n=8A007463
- Number of lattice points inside circle of radius n is 4(a(n)+n)-3.at n=39A007882
- Coordination sequence T2 for Zeolite Code AET.at n=24A008008
- Coordination sequence T3 for Zeolite Code AET.at n=24A008009
- Coordination sequence T2 for Zeolite Code ATT.at n=25A008042
- Coordination sequence T12 for Zeolite Code MFI.at n=22A008164
- Dates of birth of Kings Louis I, II, ... of France.at n=8A008746
- If a, b in sequence, so is ab+10.at n=12A009368
- a(n) = floor( n*(n-1)*(n-2)/10 ).at n=24A011892
- Composite numbers that are equal to the sum of the first k composites for some k.at n=31A013921
- Numbers k such that sigma(k) = sigma(k+7).at n=6A015867
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AFO = AlPO4-41 [Al20P20O80] starting with a T1 atom.at n=4A018959
- Numbers k such that the continued fraction for sqrt(k) has period 28.at n=14A020367
- Numbers with exactly 5 2's in their ternary expansion.at n=13A023703
- Plaindromes: numbers whose digits in base 3 are in nondecreasing order.at n=33A023745