14977
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 28
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 15876
- Proper Divisor Sum (Aliquot Sum)
- 899
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14080
- Möbius Function
- 1
- Radical
- 14977
- 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
- 208
- 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
- no
- Odd
- yes
Appears in sequences
- Lucky numbers with size of gaps equal to 20 (lower terms).at n=31A031902
- a(n) = 10*n^2 - 6*n + 1.at n=38A087348
- a(n+3) = a(n+2) + 3a(n+1) - 2a(n); a(0) = 1, a(1) = -1, a(2)= 3.at n=16A104005
- a(n) = 576*n + 1.at n=25A158370
- a(n) = 26*n^2 + 1.at n=24A158549
- Count of interior bounded regions in a regular 2n-sided polygon dissected by all diagonals parallel to sides.at n=15A165217
- Partial sums of A018805.at n=40A177853
- 50k^2-20k-23 interleaved with 50k^2+30k+17 for k=>0.at n=35A217894
- a(n) = 384*n + 1.at n=39A229853
- Number of partitions of n without three consecutive parts in arithmetic progression.at n=51A238424
- A(n,k) is the sum over all Motzkin paths of length n of products over all peaks p of (k*x_p+y_p)/y_p, where x_p and y_p are the coordinates of peak p; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=63A258309
- Number of compositions of n such that the set of parts and the set of multiplicities of parts are disjoint.at n=20A336032
- Numbers k such that k, k + 1, k + 2, and k + 4 are all semiprimes.at n=43A368670