2848
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
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 5670
- Proper Divisor Sum (Aliquot Sum)
- 2822
- 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
- 1408
- Möbius Function
- 0
- Radical
- 178
- Omega Function (Ω)
- 6
- 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
- 35
- 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
- Maximum m such that there are no two adjacent elements belonging to the same n-th power residue class modulo some prime p in the sequence 1,2,...,m (equivalently, there is no n-th power residue modulo p in the sequence 1/2,2/3,...,(m-1)/m).at n=9A000236
- Numbers k such that k*3^k + 1 is prime.at n=8A006552
- Coordination sequence T5 for Zeolite Code MTW.at n=35A008200
- Coordination sequence T2 for Zeolite Code PAU.at n=39A008220
- Fibonacci sequence beginning 0, 32.at n=11A022366
- Coordination sequence T3 for Zeolite Code SBE.at n=43A033606
- a(n) = C(n+2,3) + 2*C(n,2) + 2*(n-2).at n=22A034857
- Sum of distances between dual pairs of partitions of n for the canonical order.at n=11A036045
- Numbers whose sum of reciprocals of digits is the reciprocal of an integer.at n=32A037264
- Sum of reciprocals of digits = 1.at n=14A037268
- Number of partitions satisfying cn(0,5) <= cn(1,5) + cn(2,5) + cn(3,5) and cn(0,5) <= cn(4,5) + cn(2,5) + cn(3,5).at n=27A039845
- Number of partitions satisfying cn(0,5) + cn(1,5) <= cn(2,5) + cn(3,5) and cn(0,5) + cn(4,5) <= cn(2,5) + cn(3,5).at n=30A039886
- Numerators of continued fraction convergents to sqrt(554).at n=6A042060
- Numbers n such that string 1,4 occurs in the base 9 representation of n but not of n-1.at n=39A044264
- Numbers n such that string 4,8 occurs in the base 10 representation of n but not of n-1.at n=31A044380
- Numbers k such that string 1,4 occurs in the base 9 representation of k but not of k+1.at n=39A044645
- Numbers n such that string 4,8 occurs in the base 10 representation of n but not of n+1.at n=31A044761
- Coordination sequence T2 for Zeolite Code ISV.at n=37A047959
- Numbers k such that phi(x) = k has exactly 6 solutions.at n=43A060669
- Number of primes between n^4 and (n+1)^4.at n=20A061235