2234
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3354
- Proper Divisor Sum (Aliquot Sum)
- 1120
- 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
- 1116
- Möbius Function
- 1
- Radical
- 2234
- 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
- 45
- 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
- yes
- Odd
- no
Appears in sequences
- Number of stacks, or arrangements of n pennies in contiguous rows, each touching 2 in row below.at n=24A001524
- Low temperature series for spin-1/2 Ising partition function on 2D square lattice.at n=9A002890
- Coordination sequence T4 for Zeolite Code AFO.at n=31A008018
- Coordination sequence T1 for Zeolite Code VNI.at n=29A009907
- Coordination sequence T2 for Zeolite Code VNI.at n=29A009908
- Coordination sequence T5 for Zeolite Code VNI.at n=29A009911
- Expansion of 1/(1-x^7-x^8-x^9-x^10-x^11-x^12).at n=51A017861
- Number of partitions of n into divisors of n.at n=35A018818
- Numbers k such that the continued fraction for sqrt(k) has period 29.at n=5A020368
- a(n) = T(n,n-2), where T is the array in A026386.at n=44A026393
- Expansion of (1+x^2-x^3)/(1-x)^4.at n=21A027378
- Numbers k such that k^2 + k + 4 is a palindrome.at n=7A027716
- Numbers k such that 213*2^k+1 is prime.at n=11A032483
- Number of partitions of n into parts 3k and 3k+1 with at least one part of each type.at n=37A035618
- Number of partitions of n into parts 6k and 6k+2 with at least one part of each type.at n=75A035638
- If n has decimal expansion abc...d, with k digits, let f(n) be obtained by deleting all k's from abc...d, closing up and deleting initial 0's; sequence gives n such that f(f(f(...(n)))) = 0 or empty.at n=44A038528
- Numbers whose base-13 representation has exactly 4 runs.at n=22A043659
- Numbers k such that string 7,2 occurs in the base 8 representation of k but not of k-1.at n=38A044245
- Numbers k such that the string 5,2 occurs in the base 9 representation of k but not of k-1.at n=30A044298
- Numbers n such that string 3,4 occurs in the base 10 representation of n but not of n-1.at n=24A044366