4226
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6342
- Proper Divisor Sum (Aliquot Sum)
- 2116
- 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
- 2112
- Möbius Function
- 1
- Radical
- 4226
- Omega Function (Ω)
- 2
- 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
- 82
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- Numbers that are the sum of 5 positive 6th powers.at n=23A003361
- Coordination sequence T3 for Zeolite Code DAC.at n=41A008069
- Coordination sequence T1 for Zeolite Code GIS.at n=48A008266
- Coordination sequence T2 for Zeolite Code WEI.at n=47A009918
- Numbers n such that n is a substring of its square when both are written in base 2.at n=41A018826
- Numbers n such that n is a substring of its square (both n and n squared in base 4) (written in base 10).at n=20A018828
- Expansion of 1/((1-x)*(1-4*x)*(1-6*x)*(1-11*x)).at n=3A021834
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5, ..., 1/(2n-1)} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k.at n=35A024834
- Positive numbers having the same set of digits in base 3 and base 8.at n=40A037420
- Numbers whose base-4 representation contains exactly four 0's and one 1.at n=33A045034
- Numbers whose base-4 representation contains exactly four 0's and two 2's.at n=8A045059
- Composite and every divisor (except for 1) contains the digit 2.at n=42A062664
- Numbers k such that (k+3, k+5, k+17, k+257, k+65537) are all primes.at n=9A063799
- Reduced binary string self-substitutions: a(n) is obtained by substituting n for each 1-bit in the binary expansion of n, then dividing by n.at n=25A065160
- Centered 13-gonal numbers.at n=25A069126
- Centered square numbers: a(n) = 4*n^2 + 4*n + 2.at n=32A069894
- Smallest number of the form n^k +1 with the prime signature of n, or 0 if no such number exists.at n=64A087318
- Expansion of (eta(q^3)eta(q^15)/(eta(q)eta(q^5)))^2 in powers of q.at n=18A093065
- Number of winning paths of length n+1 across an n X n Hex board.at n=6A096367
- Number of integer partitions of n whose sequence of frequencies is strictly increasing.at n=49A100471