3275
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4092
- Proper Divisor Sum (Aliquot Sum)
- 817
- 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
- 2600
- Möbius Function
- 0
- Radical
- 655
- Omega Function (Ω)
- 3
- 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
- 136
- 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
- no
- Odd
- yes
Appears in sequences
- Number of partially achiral rooted trees.at n=13A003240
- Expansion of e.g.f.: tanh(log(1+x)/exp(x)).at n=6A009788
- Metadromes: digits in base 7 are in strict ascending order.at n=59A023776
- Coordination sequence T2 for Zeolite Code ITE.at n=39A027370
- Sums of distinct powers of 5.at n=44A033042
- Coordination sequence T2 for Zeolite Code SBE.at n=46A033605
- Coordination sequence T4 for Zeolite Code SBS.at n=45A033611
- Positive numbers having the same set of digits in base 2 and base 5.at n=40A037410
- Sums of 3 distinct powers of 5.at n=15A038475
- Numbers k such that the string 3,8 occurs in the base 9 representation of k but not of k-1.at n=45A044286
- Numbers n such that string 7,5 occurs in the base 10 representation of n but not of n-1.at n=35A044407
- Numbers n such that string 7,5 occurs in the base 10 representation of n but not of n+1.at n=35A044788
- Numbers whose base-5 representation contains exactly three 0's and three 1's.at n=5A045172
- Odd numbers with only palindromic prime factors whose sum is palindromic (counted with multiplicity).at n=16A046356
- Numbers of the form p*q*r where p,q,r are (not necessarily distinct) odd palindromic primes (odd terms from A002385).at n=36A046373
- Values of k for which A075059(k) = A003418(k) + 1 is prime.at n=62A049537
- Numbers k such that 3*7^k - 2 is prime.at n=10A059091
- Euler phi(n) / Carmichael lambda(n) = 10.at n=33A062377
- Fourth column (r=3) of FS(3) staircase array A062745.at n=24A062748
- a(n) = (2*n-1)*(5*n^2-5*n+6)/6.at n=12A063489