11224
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 22320
- Proper Divisor Sum (Aliquot Sum)
- 11096
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5280
- Möbius Function
- 0
- Radical
- 2806
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 3
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
- 130
- 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
- Squares written in base 6.at n=40A001741
- Coordination sequence for MgNi2, Position Ni1.at n=26A009933
- a(n) = s(1)*s(2)*...*s(n+1)(1/s(2) - 1/s(3) + ... + c/s(n+1)), where c=(-1)^n+1 and s(k) = 3k-2 for k = 1,2,3,...at n=4A024218
- Least m such that if r and s in {1/3, 1/6, 1/9, ..., 1/3n} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k.at n=46A024838
- a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n-k+1), where k = floor( n/2 ), s = natural numbers >= 3.at n=45A024875
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 19 ones.at n=5A031787
- Numbers k such that 297*2^k-1 is prime.at n=37A050907
- Each permutation in the list A060118 converted to Site Swap notation, with digits reversed and inverted. "Zero throws" (fixed elements) indicated with 0's.at n=35A060499
- Smallest integer >= 0 of the form x^3 - n^4.at n=23A070930
- Rounded total surface area of a regular icosahedron with edge length n.at n=36A071398
- a(n) = 6*n^2 + 3*n + 1.at n=43A085473
- Triangle read by rows: T(n,k) is number of Dyck paths of semilength n with height of second peak equal to k (n>=1; 0<=k<=n-1).at n=59A112307
- Table T(n,k) = sum over all set partitions of n of number at index k.at n=32A120057
- Least integer k>0 such that A000041(k) is divisible by 10^n.at n=5A145524
- a(n) = 13*n^2 + 10*n + 1.at n=29A161587
- a(n) = n*(n+1)*(5*n+7)/6.at n=23A162148
- Squares in lunar arithmetic in base 5 written in base 5.at n=39A171564
- Position of 5^n in A051037 (5-smooth numbers).at n=26A188427
- Least common multiple of reversals of divisors of n in decimal representation.at n=31A188649
- Least common multiple of reversals of divisors of n in decimal representation.at n=63A188649