4658
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
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7452
- Proper Divisor Sum (Aliquot Sum)
- 2794
- 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
- 2176
- Möbius Function
- -1
- Radical
- 4658
- Omega Function (Ω)
- 3
- 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
- 152
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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*(4*n+1).at n=34A007742
- Coordination sequence T5 for Zeolite Code MTW.at n=45A008200
- Numbers k that divide s(k), where s(1)=1, s(j)=18*s(j-1)+j.at n=45A014868
- a(n) = T(2n-1,n), where T is the array in A026098.at n=32A026102
- a(n) = ceiling((n + 7/10)^3).at n=15A034133
- Numbers k that divide 5^k + 3^k.at n=4A045585
- Numbers k that divide 10^k + 6^k.at n=17A045603
- Sum of the quadratic residues of prime(n).at n=32A076409
- Numbers n such that the Zsigmondy number Zs(n,4,1) differs from the n-th cyclotomic polynomial evaluated at 4.at n=46A093108
- a(n) = n + (n-1)^2 + (n+1)^2.at n=48A096376
- "Orders" where balanced prime number records (A082080) occur.at n=42A096692
- Row sums of the triangle A097883.at n=20A098404
- Numbers k such that 3^k - phi(k) is prime.at n=14A109889
- Value of the concatenation of the first n+1 terms of A118605, seen as a binary number.at n=13A119027
- Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + k^11 + ... + k^61 + k^63 is prime.at n=29A124209
- a(n) is the constant term in the expansion of Product_{k=1..n} (x^k + 1/x^k)^4.at n=4A124996
- Sum of the quadratic nonresidues of prime(n).at n=32A125615
- a(1) = 1; for n > 1, a(n) = smallest number > a(n-1) such that pairwise sums and (absolute) differences of distinct elements are all distinct.at n=40A126428
- a(n) = 4*n^2 + 73*n + 333.at n=24A157431
- a(n) = 16*n^2 + 2*n.at n=16A158056