3368
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6330
- Proper Divisor Sum (Aliquot Sum)
- 2962
- 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
- 1680
- Möbius Function
- 0
- Radical
- 842
- 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
- 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
- Number of ways to place n nonattacking bishops on an n X n board.at n=5A002465
- Numbers that are the sum of 2 positive 5th powers.at n=12A003347
- a(n) = ceiling(1000*log(n)).at n=28A004242
- Numbers that are the sum of at most 2 positive 5th powers.at n=18A004842
- Numbers that are the sum of at most 3 positive 5th powers.at n=41A004843
- Expansion of e.g.f. sinh(exp(x)*x).at n=7A009565
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite NON = Nonasil-[ 4158 ] [Si88O176].4R starting with a T4 atom.at n=11A019212
- Pseudoprimes to base 33.at n=17A020161
- Positive numbers k such that k = x^5 + y^5 has a solution in nonzero integers x, y.at n=22A020896
- Numbers k such that Fib(k) == 21 (mod k).at n=23A023179
- Numbers having period-1 7-digitized sequences.at n=17A031201
- 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 29.at n=11A031527
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 29.at n=1A031707
- Numbers whose set of base-6 digits is {2,3}.at n=44A032806
- Numerators of continued fraction convergents to sqrt(661).at n=5A042270
- Base-6 palindromes that start with 2.at n=35A043011
- Numbers k such that the string 5,2 occurs in the base 9 representation of k but not of k-1.at n=46A044298
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n-1.at n=36A044400
- Numbers n such that string 6,8 occurs in the base 10 representation of n but not of n+1.at n=36A044781
- Triangular array generated by its row sums: T(n,0) = 1 for n >= 0, T(n,1) = r(n-1), T(n,k) = T(n,k-1) - (-1)^k * r(n-k) for k = 2, 3, ..., n, n >= 2, r(h) = sum of the numbers in row h of T.at n=43A054090