3468
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 18
- Divisor Sum
- 8596
- Proper Divisor Sum (Aliquot Sum)
- 5128
- 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
- 1088
- Möbius Function
- 0
- Radical
- 102
- 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
- 30
- 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
- Numbers that are the sum of 12 positive 7th powers.at n=23A003379
- Coordination sequence T1 for Zeolite Code EPI.at n=37A008090
- Coordination sequence T4 for Zeolite Code MOR.at n=38A008185
- Number of unlabeled nonseparable (or 2-connected) loopless multigraphs with n edges.at n=10A010357
- a(n) is the concatenation of n and 2n.at n=33A019550
- Convolution of Lucas numbers and composite numbers.at n=10A023618
- T(2n-1,n-1), T given by A026714.at n=5A026718
- T(n,[ n/2 ]), T given by A026714.at n=11A026720
- Numbers having period-2 6-digitized sequences.at n=0A031357
- a(n) = 3*n^2.at n=34A033428
- Number of partitions of n with equal number of parts congruent to each of 1, 2 and 3 (mod 5).at n=52A035578
- Coordination sequence T5 for Zeolite Code STT.at n=39A038415
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n-1.at n=37A044400
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n+1.at n=37A044781
- (Terms in A029665)/2.at n=53A051425
- Susceptibility series H_3 for 2-dimensional Ising model (divided by 2).at n=9A054410
- Row sums of triangle A054453.at n=11A054455
- Numbers n such that n | 8^n + 7^n + 6^n + 5^n + 4^n + 3^n + 2^n + 1^n.at n=30A056751
- Number of numbers whose cube root rounds to n.at n=34A058034
- Denominator of 1/36 - 1/n^2.at n=50A061046