3256
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
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 6840
- Proper Divisor Sum (Aliquot Sum)
- 3584
- 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
- 1440
- Möbius Function
- 0
- Radical
- 814
- Omega Function (Ω)
- 5
- 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
- 43
- 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
- Expansion of e.g.f. (1/2)*(exp(2*x + x^2) + 1).at n=7A000902
- a(n) = solution to the postage stamp problem with 3 denominations and n stamps.at n=35A001208
- Number of symmetric trivalent maps with n nodes.at n=8A005028
- Coordination sequence T3 for Zeolite Code MOR.at n=37A008184
- Coordination sequence T4 for Zeolite Code TON.at n=35A008244
- Aliquot sequence starting at 180.at n=38A008891
- Expansion of exp(x)/cos(tan(x)).at n=7A009291
- Expansion of sinh(x)/cos(tan(x)).at n=3A009631
- Coordination sequence T2 for Zeolite Code VNI.at n=35A009908
- Expansion of e.g.f. exp(tan(arcsin(x))).at n=7A012150
- a(n) is nonsquarefree and is sum of first k nonsquarefrees for some k.at n=22A013935
- Expansion of 1/(1-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17).at n=67A017893
- Positive numbers k such that k and 2*k are anagrams in base 9 (written in base 9).at n=12A023079
- [ (4th elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 1 mod 3}.at n=3A024221
- a(n) = (d(n) - r(n))/5, where d = A026037 and r is the periodic sequence with fundamental period (1,2,0,2,0).at n=34A026039
- Number of T-frame polyominoes with n cells.at n=36A028247
- a(n) = 1 + C(2*n,n) + C(3*n,n).at n=5A029848
- Square root of A030681.at n=22A030682
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 11 ones.at n=8A031779
- Sums of distinct powers of 5.at n=43A033042