2266
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 3744
- Proper Divisor Sum (Aliquot Sum)
- 1478
- 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
- 1020
- Möbius Function
- -1
- Radical
- 2266
- 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
- 63
- 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
- Number of switching networks with S(n) acting on the domain and GL(2,2) acting on the range.at n=2A000871
- 12-gonal (or dodecagonal) pyramidal numbers: a(n) = n*(n+1)*(10*n-7)/6.at n=11A007587
- Numbers k such that sigma(k) = sigma(k+11).at n=6A015881
- a(n) is the concatenation of n and 3n.at n=21A019551
- Numbers k such that the continued fraction for sqrt(k) has period 38.at n=20A020377
- a(n) = T(2n,n-1), where T is the array defined in A026105.at n=5A026115
- "CGJ" (necklace, element, labeled) transform of 2,2,2,2...at n=6A032147
- Every run of digits of n in base 10 has length 2.at n=23A033008
- Numbers whose base-10 expansion has no run of digits with length < 2.at n=34A033023
- Fractional part of square root of a(n) starts with 6: first term of runs.at n=45A034112
- Numbers k such that k-th and (k+1)-st term of A038593 differ by 2.at n=39A038633
- Numbers n such that string 3,2 occurs in the base 8 representation of n but not of n-1.at n=40A044213
- Numbers n such that string 8,7 occurs in the base 9 representation of n but not of n-1.at n=30A044330
- Numbers n such that string 6,6 occurs in the base 10 representation of n but not of n-1.at n=22A044398
- Numbers n such that string 3,2 occurs in the base 8 representation of n but not of n+1.at n=40A044594
- Numbers n such that string 8,7 occurs in the base 9 representation of n but not of n+1.at n=30A044711
- Numbers n such that string 6,6 occurs in the base 10 representation of n but not of n+1.at n=22A044779
- Positive integers having more base-10 runs of even length than odd.at n=25A044836
- Numbers whose base-5 representation contains exactly one 0 and three 3's.at n=28A045194
- Numbers whose base-5 representation contains exactly one 1 and three 3's.at n=36A045239