14887
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
- 4
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 14888
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 14886
- Möbius Function
- -1
- Radical
- 14887
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 45
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1744
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- A generalized partition function.at n=16A002602
- Brund-Steinmetz permutations.at n=5A013639
- Primes that remain prime through 3 iterations of function f(x) = 4x + 9.at n=36A023282
- Decimal part of cube root of a(n) starts with 6: first term of runs.at n=22A034132
- Primes whose sum of digits is the perfect number 28.at n=37A048517
- Primes of the form k^2 + 3.at n=20A049423
- Prime number spiral (clockwise, East spoke).at n=21A054555
- Denoting 5 consecutive primes by p, q, r, s and t, these are the values of q such that q, r and s have 10 as a primitive root, but p and t do not.at n=31A060261
- Numbers n such that 6*10^n + 8*R_n - 1 is prime, where R_n = 11...1 is the repunit (A002275) of length n.at n=11A103046
- Number of compositions of n into 5 parts such that no two adjacent parts are equal.at n=22A106354
- Primes p such that p+1, p+2 and p+3 have equal number of divisors.at n=19A119711
- Duplicate of A049423.at n=20A121825
- Antidiagonal sums of table A127054.at n=8A127055
- Primes congruent to 9 mod 43.at n=36A142258
- Primes congruent to 35 mod 47.at n=35A142386
- Primes congruent to 47 mod 53.at n=36A142577
- Primes congruent to 19 mod 59.at n=29A142746
- Primes congruent to 3 mod 61.at n=28A142801
- Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 11000-01111-11000 pattern in any orientation.at n=13A147455
- Primes of the form 18*p+1, where p is also a prime.at n=41A165811