3587
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3816
- Proper Divisor Sum (Aliquot Sum)
- 229
- 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
- 3360
- Möbius Function
- 1
- Radical
- 3587
- 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
- 118
- 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
- Sum of 10 positive 9th powers.at n=7A003399
- Total number of fixed points in trees with n nodes.at n=11A005201
- Number of Twopins positions.at n=42A005686
- Coordination sequence T1 for Zeolite Code EUO.at n=37A008095
- Number of distinct products ijk with 1 <= i,j,k <= n.at n=37A027425
- Sequence satisfies T^2(a)=a, where T is defined below.at n=51A027589
- 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 59.at n=11A031557
- Numbers whose set of base-7 digits is {1,3}.at n=43A032914
- Expansion of (3 + x^2) / (1 - x)^4.at n=16A037237
- Coordination sequence T2 for Zeolite Code STF.at n=40A038441
- Numbers whose base-7 representation contains exactly three 3's.at n=31A043407
- Numbers n such that string 8,7 occurs in the base 10 representation of n but not of n-1.at n=38A044419
- Numbers k such that string 8,7 occurs in the base 10 representation of k but not of k+1.at n=38A044800
- Semiprimes p1*p2 such that p2>p1 and p2 mod p1 = 7.at n=14A064905
- Diagonals and antidiagonals of the prime-composite array, B(m,n) which are zeros from the Third Borve Conjecture.at n=32A067681
- Numbers k such that k and 3^k end with the same two digits.at n=35A067749
- Numbers n such that Pi^(n*e)-e^n is closer to its nearest integer than any value of Pi^(k*e)-e^k for 1 <= k < n.at n=9A080280
- Let R be the polynomial ring GF(2)[x]. Then a(n) = number of distinct products f*g with f,g in R and 0 <= deg(f),deg(g) <= n.at n=5A086908
- a(n) = n*x^n + (n-1)*x^(n-1) + . . . + x + 1 for x=2.at n=8A088578
- Number of partitions of n with at most two even parts.at n=33A096778