2668
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 5040
- Proper Divisor Sum (Aliquot Sum)
- 2372
- 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
- 1232
- Möbius Function
- 0
- Radical
- 1334
- 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
- 146
- 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
- Numbers n such that n^32 + 1 is prime.at n=47A006315
- Coordination sequence T4 for Zeolite Code AFO.at n=34A008018
- Coordination sequence T3 for Zeolite Code AFT.at n=39A008028
- Coordination sequence T2 for Zeolite Code MFS.at n=32A008174
- Coordination sequence T1 for Zeolite Code MTN.at n=31A008186
- Coordination sequence T4 for Zeolite Code -CHI.at n=33A009849
- Coordination sequence T3 for Zeolite Code RUT.at n=34A009899
- Number of lines through exactly 2 points of an n X n grid of points.at n=11A018809
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NAT = Natrolite Na16[Al16Si24O80].16H2O starting from a T2 atom.at n=11A019201
- Number of distinct products ijk with 1 <= i,j,k <= n.at n=33A027425
- a(n) = [ Gamma(sqrt(n)) ].at n=58A033295
- Coordination sequence T5 for Zeolite Code SFF.at n=34A038436
- Number of primes less than 1000n.at n=23A038812
- Numbers n such that string 8,4 occurs in the base 9 representation of n but not of n-1.at n=35A044327
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n-1.at n=28A044400
- Numbers n such that string 8,4 occurs in the base 9 representation of n but not of n+1.at n=35A044708
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n+1.at n=28A044781
- Digits even, nonzero and nondecreasing.at n=51A045927
- Number of anagrams of A046888(n) that are primes.at n=52A046889
- Bessel function |Y_0(n)| is a monotonically decreasing positive sequence.at n=17A046963