11622
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 12
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 25200
- Proper Divisor Sum (Aliquot Sum)
- 13578
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3552
- Möbius Function
- 1
- Radical
- 11622
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- 50
- 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
- yes
- Odd
- no
Appears in sequences
- Number of ways to fold a strip of n blank stamps.at n=10A001011
- Erroneous version of A001011 ("folding a strip of stamps").at n=10A003054
- Coordination sequence for alpha-Mn, Position Mn1.at n=28A009950
- Numerators of continued fraction convergents to sqrt(857).at n=8A042654
- Numbers m such that [A070080(m), A070081(m), A070082(m)] is an acute scalene integer triangle with prime side lengths.at n=34A070123
- To compute a(n) we first write down 2^n 1's in a row. Each row takes the right half of the previous row and each element in it equals sum of the elements in the previous row starting at the middle. The single element in the last row is a(n).at n=6A107354
- Matrix inverse of triangle A136501, read by rows.at n=21A136502
- One half of (n-th sum of primes between successive pairs of twin primes minus n-th number of primes between successive pairs of twin primes).at n=49A168433
- Number of cyclotomic cosets of 13 mod 10^n.at n=38A221855
- Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18.at n=2A233991
- Number of (n+1) X (3+1) 0..6 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18.at n=1A233992
- T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18.at n=7A233997
- T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18.at n=8A233997
- Number of partitions of n with difference 8 between the number of odd parts and the number of even parts, both counted without multiplicity.at n=35A242699
- Numbers which are divisible by prime(d) for all digits d in their decimal representation.at n=28A256786
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 62", based on the 5-celled von Neumann neighborhood.at n=30A270081
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 401", based on the 5-celled von Neumann neighborhood.at n=26A271805
- Numbers n such that Bernoulli number B_{n} has denominator 3318.at n=7A272383
- Ulam numbers k such that k/3 is also an Ulam number.at n=23A287212
- Number of twice-partitions of n with no repeated partitions.at n=15A296122