11038
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 16560
- Proper Divisor Sum (Aliquot Sum)
- 5522
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5518
- Möbius Function
- 1
- Radical
- 11038
- 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
- 161
- 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
- Numbers k such that the continued fraction for sqrt(k) has period 100.at n=21A020439
- Numbers whose least quadratic nonresidue (A020649) is 13.at n=31A025025
- Number of partitions of n such that cn(0,5) = cn(1,5) < cn(3,5) <= cn(2,5) = cn(4,5).at n=73A036872
- Row sums of the triangle A097883.at n=27A098404
- Numbers k such that 2^k + 25 is prime.at n=27A157006
- Cyclops semiprimes.at n=35A160725
- Number of symmetry classes of 3 X 3 magilatin squares with positive values and magic sum n.at n=47A173730
- Numbers n with property that there is a different number m such that the lunar squares n*n and m*m are the same.at n=25A181319
- Number of 0..n arrays x(0..10) of 11 elements with zero 5th differences.at n=42A200373
- a(n) = n + (n base 2 regarded as a decimal number).at n=27A269130
- Squarefree semiprimes (products of two distinct primes) between sphenic numbers (products of three distinct primes).at n=32A362507
- Number of distinct subsets S of [1..n] such that for all 1 <= k <= n, there exists two elements x,y in S (not necessarily distinct) such that x+y = 2k.at n=16A383968