6432
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 17136
- Proper Divisor Sum (Aliquot Sum)
- 10704
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2112
- Möbius Function
- 0
- Radical
- 402
- Omega Function (Ω)
- 7
- 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
- 23
- 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
- From variance of Fibonacci search.at n=12A006479
- Theta series of laminated lattice LAMBDA_13^{min}.at n=3A006915
- Number of ordered triples of integers from [ 1..n ] with no global factor.at n=34A015631
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AST = AlPO4-16 [Al20P20O80].4R.16H2O starting with a T2 atom.at n=5A018981
- Coordination sequence for root lattice B_4.at n=6A022146
- Least term in period of continued fraction for sqrt(n) is 5.at n=26A031429
- Theta series of lattice A_2 tensor D_3 (dimension 6, det. 432, min. norm 4).at n=39A033701
- Number of 2n-bead black-white reversible strings with n black beads and fundamental period 2n.at n=8A045627
- Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2) = k; sequence gives values of k.at n=29A048191
- Closed 3-dimensional ball numbers (version 2): a(n)= number of integer points (i,j,k) contained in a closed ball of diameter n, centered at (1/2,0,0).at n=23A053593
- 5-morphic but not bimorphic, automorphic nor trimorphic.at n=34A056036
- Numbers k such that k^4 == 1 (mod 5^4).at n=41A056091
- Number of paths (without loops) in graph of n-dimensional hypercube starting at point (0,0,0,...,0) and ending at (1,1,1,...,1).at n=3A059783
- Numbers k such that k^2 + prime(k) and k^2 - prime(k) are both primes.at n=34A064483
- Number of divisors of n equals the average of distinct prime factors of n.at n=27A067547
- Numbers k such that [A070080(k), A070081(k), A070082(k)] is an obtuse integer triangle with integer area.at n=32A070147
- Numbers n such that n and the n-th prime have the same digits.at n=11A074350
- Number of distinct products i*j*k with 1 <= i < j <= k <= n and j < n.at n=47A083508
- Number of primes <= 10^n which have repeated decimal digits.at n=4A098226
- Euler-Seidel matrix T(k,n) with start sequence e.g.f. 2x/(1+e^(2x)), read by antidiagonals.at n=51A099028