11502
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 20
- Divisor Sum
- 26136
- Proper Divisor Sum (Aliquot Sum)
- 14634
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3780
- Möbius Function
- 0
- Radical
- 426
- Omega Function (Ω)
- 6
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 55
- 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
- Number of compositions of n into 6 ordered relatively prime parts.at n=14A023031
- Number of 10's in all partitions of n.at n=42A024794
- T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098.at n=25A026101
- Even 10-gonal (or decagonal) numbers.at n=27A028994
- Numbers divisible by twice the sum of the products of each of their digits, excluding even multiples of 10.at n=29A085446
- Sum of A095734(p) for all primes p such that Fib(n+1) <= p < Fib(n+2) (where Fib = A000045).at n=22A095732
- Numbers n such that n+2*prime(n) is a perfect square.at n=30A104776
- 10-gonal numbers which are divisible by the sum of their digits.at n=21A119548
- Number of lines through at least 2 points of a 9 X n grid of points.at n=25A160849
- Numbers k such that phi(phi(k)) = sigma(rad(k)).at n=22A173748
- Triangle read by row. T(n,m) gives the number of isomorphism classes of simple arrangements of n pseudolines and m double pseudolines in the Moebius strip.at n=14A180503
- Triangle read by rows: Partial row sums of A181853(n,k).at n=40A181854
- Number of simple Mobius arrangements of pseudolines of order n.at n=4A191945
- Number of partitions p of n such that the multiplicity of min(p)*max(p) is a part.at n=35A240498
- The 360 degree spoke (or ray) of a hexagonal spiral of Ulam.at n=31A244803
- a(1)=1, a(n+1) is the smallest number m such that A244447(a(n)) < A244447(m).at n=9A246626
- Number of (n+2) X (2+2) 0..3 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=16A252713
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 870", based on the 5-celled von Neumann neighborhood.at n=33A273705
- Numbers missing from A317415.at n=23A317417
- Numbers missing from A317416.at n=22A317418