11229
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 15840
- Proper Divisor Sum (Aliquot Sum)
- 4611
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7056
- Möbius Function
- -1
- Radical
- 11229
- Omega Function (Ω)
- 3
- 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
- yes
- 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
- 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
- Pseudoprimes to base 20.at n=32A020148
- Pseudoprimes to base 77.at n=38A020205
- Numbers k such that the continued fraction for sqrt(k) has period 84.at n=40A020423
- Odd 9-gonal (or enneagonal) numbers.at n=28A028991
- Numbers whose set of base-14 digits is {1,4}.at n=24A032826
- a(n) = (2*n+1)*(7*n+1).at n=28A033572
- Numbers n such that phi((prime(n)+1)/2)=sigma(n).at n=30A068473
- Molien series for group of order 4608 acting on joint weight enumerators of a pair of binary doubly-even self-dual codes.at n=42A097870
- Numbers k for which 14*k+1, 14*k+5, 14*k+11 and 14*k+13 are primes.at n=37A123987
- Starting values that produce a larger juggler number than smaller starting values.at n=10A143742
- Smallest j such that j*2*p(n)^3-1=q is prime, j*2*p(n)*q^2-1=r, j*2*p(n)*r^2-1=s, where r and s are also prime.at n=44A224611
- Number of partitions of 4n into at most 5 parts.at n=17A256539
- Composites whose prime factorization in base 6 is an anagram of the number in base 6.at n=36A260050
- Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 547", based on the 5-celled von Neumann neighborhood.at n=6A272839
- Number of 1-dimensional sandpiles with n grains piling up against the wall.at n=20A291896
- Number of compositions of n whose standard factorization into Lyndon words has all distinct weakly increasing factors.at n=16A299027
- Numbers k such that 7*k+1 divides 7^k+1.at n=4A381258