2259
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 3276
- Proper Divisor Sum (Aliquot Sum)
- 1017
- 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
- 1500
- Möbius Function
- 0
- Radical
- 753
- Omega Function (Ω)
- 3
- 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
- 37
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers that are the sum of 12 positive 6th powers.at n=37A003368
- Number of minimal covers of an (n + 1)-set by a collection of n nonempty subsets, a(n) = A035348(n,n-1).at n=7A003469
- Number of partitions of n into distinct parts, none being 7.at n=49A015754
- Expansion of 1/((1-x)*(1-2*x)*(1-12*x)).at n=3A016207
- a(n) = sum of the numbers between the two n's in A026280.at n=43A026283
- a(n) = n^2 + n + 3.at n=47A027688
- Numbers k such that the continued fraction for sqrt(k) has even period 2*m and the m-th term of the periodic part is 5.at n=46A031408
- Fibonacci iteration starting with (1, a(n)) leads to a "nine digits anagram".at n=4A034587
- Triangle of a(n,k) = number of k-member minimal covers of an n-set (n >= k >= 1).at n=43A035348
- Denominators of continued fraction convergents to sqrt(541).at n=7A042035
- Numbers n such that string 2,3 occurs in the base 8 representation of n but not of n-1.at n=40A044206
- Numbers n such that string 0,8 occurs in the base 9 representation of n but not of n-1.at n=29A044259
- Numbers k such that the string 8,0 occurs in the base 9 representation of k but not of k-1.at n=30A044323
- Numbers n such that string 5,9 occurs in the base 10 representation of n but not of n-1.at n=24A044391
- Numbers n such that string 2,3 occurs in the base 8 representation of n but not of n+1.at n=40A044587
- Numbers n such that string 8,0 occurs in the base 9 representation of n but not of n+1.at n=30A044704
- Numbers n such that string 2,5 occurs in the base 10 representation of n but not of n+1.at n=25A044738
- Numbers n such that string 5,9 occurs in the base 10 representation of n but not of n+1.at n=24A044772
- Numbers having, in base 3, (sum of even run lengths)=(sum of odd run lengths).at n=37A044874
- Number of minimal covers on n objects with 8 members.at n=8A046168