11902
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
- 8
- Divisor Sum
- 19512
- Proper Divisor Sum (Aliquot Sum)
- 7610
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5400
- Möbius Function
- -1
- Radical
- 11902
- 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
- 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 polyhexes of class PF2 with a particular symmetry.at n=14A030525
- T(n,n-3), array T as in A054110.at n=30A054112
- 100000n+1, 100000n+3, 100000n+7, 100000n+9 are all primes.at n=5A064964
- Total sum of odd parts in all partitions of n.at n=21A066967
- Convolution of L(n+1) := A000204(n+1) (Lucas), n>=0, with L(n+6), n>=0.at n=8A067984
- Number of triples (i,j,k) with 1 <= i <= j < k <= n and gcd{i,j,k} = 1.at n=43A100448
- Numbers n such that (2^p + 1)/3 is prime, where p is the n-th prime.at n=33A123176
- Number of partitions of n into exactly 5 different parts with distinct multiplicities.at n=25A212116
- Triangle read by rows related to enumeration of permutations avoiding certain patterns.at n=39A220860
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 573", based on the 5-celled von Neumann neighborhood.at n=21A272997
- a(n) = 10*n^2 + 10*n + 2.at n=34A273366
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 710", based on the 5-celled von Neumann neighborhood.at n=41A273423
- Numbers k such that lcm(1,2,3,...,k)/23 equals the denominator of the k-th harmonic number H(k).at n=21A342351
- Number of integer partitions of n whose parts have choosable sets of integer partitions.at n=44A387328