3487
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3816
- Proper Divisor Sum (Aliquot Sum)
- 329
- 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
- 3160
- Möbius Function
- 1
- Radical
- 3487
- 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
- 131
- 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
- no
- Odd
- yes
Appears in sequences
- Coordination sequence T2 for Zeolite Code DAC.at n=37A008068
- a(n) = floor(n*(n-1)*(n-2)/17).at n=40A011899
- Numbers k such that the continued fraction for sqrt(k) has period 46.at n=20A020385
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5,..., 1/(2n-1)} satisfy r < s, then r < k/m < s for some integer k.at n=47A024819
- Odd elements in the 5-Pascal triangle A028313.at n=70A028315
- Odd elements in the 5-Pascal triangle A028313.at n=73A028315
- Odd elements in the 5-Pascal triangle A028313 that are not 1.at n=42A028316
- Odd elements in the 5-Pascal triangle A028313 that are not 1.at n=45A028316
- Distinct elements in the 5-Pascal triangle A028313.at n=46A028318
- Distinct odd elements in the 5-Pascal triangle A028313.at n=24A028319
- Elements to the right of the central elements of the 5-Pascal triangle A028313.at n=50A028323
- Elements to the right of the central elements of the 5-Pascal triangle A028313 that are not 1.at n=37A028324
- Odd elements to the right of the central elements of the 5-Pascal triangle A028313.at n=33A028325
- Exactly 5 digits from {1,2,3,4,5,6,7,8,9} can precede a(n) to form a prime.at n=29A032695
- Numbers whose set of base-7 digits is {1,3}.at n=38A032914
- Number of inequivalent binary [ n,3 ] codes of dimension <= 3 without zero columns.at n=22A034337
- Multiplicity of highest weight (or singular) vectors associated with character chi_14 of Monster module.at n=39A034402
- Number of partitions of n with equal number of parts congruent to each of 2, 3 and 4 (mod 5).at n=47A035581
- Numbers whose base-7 representation contains exactly four 1's.at n=21A043400
- Numbers n such that string 8,7 occurs in the base 10 representation of n but not of n-1.at n=37A044419