14326
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 25200
- Proper Divisor Sum (Aliquot Sum)
- 10874
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6048
- Möbius Function
- 1
- Radical
- 14326
- Omega Function (Ω)
- 4
- 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
- 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
- 58
- 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
- yes
- Odd
- no
Appears in sequences
- Even heptagonal numbers (A000566).at n=38A014640
- Number of asymmetric (identity) trees with n nodes and 4 leaves.at n=36A055335
- Number of solutions to +- 1 +- 2 +- 3 +- ... +- n = n.at n=20A063890
- Structured hexagonal anti-prism numbers.at n=18A100183
- Heptagonal numbers for which the digital root is also a heptagonal number.at n=35A117663
- a(1) = 3, a(2) = 4. a(n) = (largest composite which occurs earlier in sequence) + (largest prime which occurs earlier in sequence).at n=28A120365
- Numbers k such that the string k modulo 1000 is found at position k in the decimal digits of Pi.at n=38A153226
- a(n) = n*(10*n-3).at n=38A195018
- a(n) = n*(5*n^2 - 3*n + 4) / 6.at n=26A203552
- Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)=1.at n=14A212894
- a(n) = k if the first appearance of n in A077618 is at index k, or 0 if k does not appear in A077618.at n=13A291056
- "Station-keeping Collatz numbers": a(n) is the smallest even number whose Collatz ('3x+1') trajectory, after its initial step downward, is directed back toward its starting value at each of its next n steps.at n=21A304363
- "Station-keeping Collatz numbers": a(n) is the smallest even number whose Collatz ('3x+1') trajectory, after its initial step downward, is directed back toward its starting value at each of its next n steps.at n=22A304363
- "Station-keeping Collatz numbers": a(n) is the smallest even number whose Collatz ('3x+1') trajectory, after its initial step downward, is directed back toward its starting value at each of its next n steps.at n=23A304363
- Numbers k such that 453*2^k+1 is prime.at n=32A323196
- Heptagonal numbers which are products of four distinct primes.at n=3A351867
- a(n) = Sum_{k=1..n} binomial(k+3,3) * floor(n/k).at n=20A366985
- Squarefree numbers k such that k^2 is abundant, and d^2 is nonabundant for any proper divisor d of k.at n=29A381741