12952
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 24300
- Proper Divisor Sum (Aliquot Sum)
- 11348
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6472
- Möbius Function
- 0
- Radical
- 3238
- Omega Function (Ω)
- 4
- 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
- 50
- 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
- Coordination sequence for MgNi2, Position Mg1.at n=28A009936
- "BHK" (reversible, identity, unlabeled) transform of 1,3,5,7...at n=9A032100
- Number of partitions satisfying cn(1,5) + cn(4,5) <= cn(0,5) + cn(2,5) and cn(1,5) + cn(4,5) <= cn(0,5) + cn(3,5).at n=42A039864
- a(n) = 2^n - binomial(n, floor(n/2)).at n=14A045621
- Bessel function J_0(n) is a monotonically decreasing positive sequence.at n=27A046960
- a(n) = 4^n - binomial(2*n,n).at n=7A068551
- Site series for first perpendicular moment of 4.8 (bathroom tile) lattice.at n=23A120560
- Quadruples a>b>c>d>0 such that six pairwise sums and the total sum are all squares.at n=1A175535
- Number of n X 2 0..1 arrays with row sums equal and column sums unequal to adjacent columns.at n=13A202736
- a(n) = floor(sqrt(5*2^n)).at n=25A221942
- Number of length 3 0..n arrays with each partial sum starting from the beginning no more than two standard deviations from its mean.at n=22A244834
- Number of n-step random walks on a line starting from the origin and returning to it at least once.at n=14A307768
- a(n) is the number of base-10 nonbouncy numbers below 10^n.at n=5A364342
- Number of rises in all compositions of n with parts in {1,2,3} and adjacent differences in {-1,1}.at n=40A383549