3326
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4992
- Proper Divisor Sum (Aliquot Sum)
- 1666
- 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
- 1662
- Möbius Function
- 1
- Radical
- 3326
- Omega Function (Ω)
- 2
- 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
- 74
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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 carbon (rooted) trees with n carbon atoms = unordered 4-tuples of ternary trees.at n=12A000678
- Duplicate of A003436.at n=5A000858
- Number of inequivalent labeled Hamiltonian circuits on n-octahedron. Interlacing chords joining 2n points on circle.at n=6A003436
- a(n) = 1 + Sum_{i=1..n} (n-i+1)*phi(i).at n=31A005598
- Numbers k such that k!! - 1 is prime.at n=16A007749
- Number of partitions of n into distinct parts, none being 3.at n=54A015745
- Expansion of 1/((1-x)(1-7x)(1-11x)).at n=3A016254
- Numbers k such that the continued fraction for sqrt(k) has period 64.at n=8A020403
- Index of 7^n within the sequence of the numbers of the form 2^i*7^j.at n=48A025720
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 56.at n=15A031554
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 28 ones.at n=23A031796
- Numbers whose set of base-6 digits is {2,3}.at n=38A032806
- a(0)=2; a(n) is the smallest k > a(n-1) such that the fractional part of k^(1/10) starts with n.at n=25A034075
- a(n) = least integer m such that the part after the decimal point of the n-th root of m starts with the digit 5.at n=18A034082
- Least possible integer k/(product of digits k) for k with n digits.at n=16A034685
- Expansion of sum ( q^n / product( 1-q^k, k=1..4*n), n=0..inf ).at n=23A035296
- Growth function of an infinite cubic graph (number of nodes at distance <=n from fixed node).at n=19A038621
- Numbers having four 2's in base 6.at n=19A043380
- Numbers whose base-5 representation has exactly 6 runs.at n=32A043606
- Numbers n such that string 2,6 occurs in the base 10 representation of n but not of n-1.at n=37A044358