2876
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 5040
- Proper Divisor Sum (Aliquot Sum)
- 2164
- 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
- 1436
- Möbius Function
- 0
- Radical
- 1438
- Omega Function (Ω)
- 3
- 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
- 53
- 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
- Number of bipartite partitions of n white objects and 4 black ones.at n=11A000465
- Number of bipartite partitions of n white objects and 6 black ones.at n=8A002755
- Number of bipartite partitions of n white objects and 8 black ones.at n=6A002757
- Number of n-node trees with a forbidden limb of length 5.at n=14A002991
- Positions of remoteness 6 in Beans-Don't-Talk.at n=40A005694
- Number of hexaflexagons with 3n triangles that can be folded from a straight strip of paper.at n=7A007282
- Coordination sequence T1 for Zeolite Code AET.at n=37A008007
- Coordination sequence T2 for Zeolite Code AET.at n=37A008008
- Coordination sequence T2 for Zeolite Code ERI.at n=39A008094
- Coordination sequence T1 for Zeolite Code LTL.at n=39A008138
- Coordination sequence T2 for Zeolite Code MEI.at n=39A008147
- Coordination sequence T3 for Zeolite Code MEI.at n=39A008148
- a(n) = (n+1)*(n^2 +8*n +6)/6. Number of n-dimensional partitions of 4. Number of terms in 4th derivative of a function composed with itself n times.at n=23A008778
- If a, b in sequence, so is ab+4.at n=46A009303
- Coordination sequence for FeS2-Marcasite, Fe position.at n=28A009955
- Numbers k such that the continued fraction for sqrt(k) has period 44.at n=22A020383
- a(n) = Sum_{k=0..floor(n/2)} A027157(n-k, k).at n=13A027167
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 26.at n=35A031524
- Numbers k such that the string 4,5 occurs in the base 9 representation of k but not of k-1.at n=39A044292
- Numbers n such that string 7,6 occurs in the base 10 representation of n but not of n-1.at n=31A044408