4074
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
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 9408
- Proper Divisor Sum (Aliquot Sum)
- 5334
- 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
- 1152
- Möbius Function
- 1
- Radical
- 4074
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 51
- 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 tertiary alcohols (alkanols or alkyl alcohols C_n H_{2n+1} OH) with n carbon atoms.at n=14A000600
- Erroneous version of A174313.at n=7A002933
- Cluster series for hexagonal lattice.at n=8A003202
- Triangle of D'Arcais numbers.at n=42A008298
- a(1) = 2; a(n+1) = a(n)-th composite.at n=26A022450
- Expansion of x^2*(2 - x + x^2) / ((1 + x)*(1 - x)^4).at n=27A026035
- Sum of the numbers between the two n's in A026362.at n=33A026365
- Every run of digits of n in base 5 has length 2.at n=27A033003
- Number of 4-ary rooted trees with n nodes and height at most 9.at n=12A036614
- Number of self-avoiding walks on a tetrahedral (diamond) net, having 2n steps and forming a closed loop.at n=7A038515
- Jabotinsky-triangle related to A039647.at n=42A039692
- Numbers whose base-4 representation contains exactly three 2's and three 3's.at n=19A045151
- Nonisomorphic catacondensed monoheptafusenes (see reference for precise definition).at n=8A045904
- Numerators of convergents to the diesis, log_2(5/4).at n=8A046103
- Thickened pyramidal numbers: a(n) = 2*(n+1)*n + Sum_{i=1..n} (4*i*(i-1) + 1).at n=14A050533
- Smallest number m such that when A051953 is applied n times to m the result is neither a power of 2 nor 0.at n=12A053476
- Coordination sequence T6 for Zeolite Code MTF.at n=38A057309
- 4-wave sequence beginning with 2's with middles dropped.at n=8A060823
- 4-wave sequence beginning with 2s.at n=24A060824
- Numbers k such that x-4, x-2, x+2, x+4 are primes, where x = 30*k - 15.at n=41A061668