14950
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
- 1
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 31248
- Proper Divisor Sum (Aliquot Sum)
- 16298
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5280
- Möbius Function
- 0
- Radical
- 2990
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
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
- yes
- 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
- 102
- 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
- Binomial coefficient binomial(n,4) = n*(n-1)*(n-2)*(n-3)/24.at n=26A000332
- a(n) = binomial coefficient C(2n, n-9).at n=4A004315
- Number of partitions of n into at most 7 parts.at n=48A008636
- Binomial coefficient C(26,n).at n=4A010942
- Binomial coefficient C(26,n).at n=22A010942
- a(n) = binomial(n,22).at n=4A010975
- Binomial coefficients: C(n,k), 4 <= k <= n-4, sorted, duplicates removed.at n=37A024756
- a(n) = binomial(n, floor(n/6)).at n=26A051053
- Binomial coefficients C(2*n+4,4).at n=11A053134
- Sequence of sums based on primes = 7 mod 8.at n=26A060108
- a(n) = lcm(n, n+1, n+2, n+3)/12.at n=22A067047
- First differences of A048093.at n=25A084919
- a(n)=floor{square((1*n^0+1*n^1+2*n^2+4*n^3)/(1*n^0+2*n^1+1*n^2))}.at n=31A086863
- (Prime(prime(n))^2-1)/24.at n=27A092772
- Triangle, read by rows, where T(n,k) = C(n*(n-1)/2 - k*(k-1)/2 + n-k, n-k).at n=40A107862
- Pentagonal numbers (A000326) whose digit reversal is a semiprime (A001358).at n=27A115709
- Pentagonal numbers divisible by 5.at n=40A117793
- Triangle, read by rows, where T(n,k) = C( n*(n+1)/2 + n-k + 1, n-k), for n>=k>=0.at n=23A121335
- Triangle, read by rows, where T(n,k) = C( k*(k+1)/2 + n-k + 1, n-k) for n>=k>=0.at n=61A122176
- List of numbers that are both pentagonal (A000326) and binomial coefficients C(n,4) (A000332).at n=16A145920