14707
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
- 8
- Divisor Sum
- 18432
- Proper Divisor Sum (Aliquot Sum)
- 3725
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 11400
- Möbius Function
- -1
- Radical
- 14707
- 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
- 164
- 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
- no
- Odd
- yes
Appears in sequences
- Number of numbers of complexity n, i.e., that can be built from n ones using + and *, and require at least that many ones.at n=32A005421
- Odd heptagonal numbers (A000566).at n=38A014637
- a(n) = (2*n + 1)*(5*n + 1).at n=38A033571
- a(n) = ceiling((n + 1/2)^3).at n=23A034131
- Numbers k such that (k!! + (k+1)!! - 1)/2 is prime.at n=15A076209
- Members of A000124 which are multiples of 11.at n=31A083511
- Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+569)^2 = y^2.at n=7A101152
- Numbers k such that 7*10^k + 3*R_k + 6 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=12A103056
- Heptagonal numbers for which the digital root is also a heptagonal number.at n=36A117663
- Heptagonal numbers divisible by 7.at n=22A117795
- Numbers such that the sum of the factorials of the digits of the cube is a square.at n=39A126076
- a(n) = 2*a(n-1) + 2*a(n-2) + 2*a(n-3) - a(n-4); a(0)=0, a(1)=1, a(2)=3, a(3)=9, a(4)=25.at n=10A138574
- a(n) = 8*n^2 - 2*n + 1.at n=43A185438
- a(n) = n^5 - n^4 + n^3 - n^2 + n.at n=7A191012
- Cyclically smooth Lyndon words with 5 colors.at n=11A215337
- Composite numbers n such that lambda(n) divides 5n-5, where lambda is the Carmichael lambda function (A002322).at n=39A231572
- a(n) is the number of noncomposites (primes or 1) that are n digits long in balanced ternary notation.at n=11A233919
- Number of partitions of n, where the difference between the number of odd parts and the number of even parts is 4.at n=47A240013
- Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=31A254906
- a(n) = 7^n - a(n-1) for n>0, a(0)=0.at n=5A271427