3512
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6600
- Proper Divisor Sum (Aliquot Sum)
- 3088
- 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
- 1752
- Möbius Function
- 0
- Radical
- 878
- Omega Function (Ω)
- 4
- 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
- 56
- 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
- Number of primes < prime(n)^2.at n=41A000879
- Number of primes <= 2^n.at n=15A007053
- Expansion of (1+x^2)(1+x^4)/((1-x)^2*(1-x^2)*(1-x^3)).at n=31A007979
- Coordination sequence T1 for Zeolite Code AFR.at n=45A008019
- Coordination sequence T2 for Zeolite Code MAZ.at n=41A008145
- Coordination sequence T3 for Zeolite Code NON.at n=36A008214
- Coordination sequence for {A_5}* lattice.at n=6A008533
- If a, b in sequence, so is ab+8.at n=19A009331
- Coordination sequence T4 for Zeolite Code iRON.at n=42A009884
- Coordination sequence T4 for Zeolite Code VET.at n=36A009905
- Coordination sequence T3 for Zeolite Code VSV.at n=38A009916
- a(1) = 2; a(n+1) = a(n)-th composite.at n=25A022450
- Numbers k such that Fib(k) == 21 (mod k).at n=24A023179
- Coordination sequence T1 for Zeolite Code SBS.at n=47A033608
- Convolution of natural numbers n >= 1 with Lucas numbers L(k)(A000032) for k >= 2.at n=11A033811
- Decimal part of a(n)^(1/7) starts with n so that a(n) < a(n+1).at n=21A034072
- Decimal part of cube root of a(n) starts with 2: first term of runs.at n=14A034128
- Number of primes < n^3.at n=31A038098
- Numbers k such that k-th and (k+1)-st term of A038593 differ by 10.at n=46A038641
- Number of partitions satisfying cn(0,5) <= cn(1,5) + cn(4,5).at n=28A039839