14074
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
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 21888
- Proper Divisor Sum (Aliquot Sum)
- 7814
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6780
- Möbius Function
- -1
- Radical
- 14074
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 151
- 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
- Number of threshold functions of n variables.at n=6A002833
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = (primes).at n=27A025117
- Numbers whose base-5 representation contains exactly three 2's and three 4's.at n=10A045292
- Numbers k such that (-k!! + (k+1)!! - 1)/2 is prime.at n=17A076211
- Sum of first n perfect powers.at n=41A076408
- Start with {2} and close under the operations XY and XY+1; sequence gives complete list of numbers that do not appear.at n=94A093906
- Cumulative sum of absolute values of coefficients of q^(2n) in the series expansion of Ramanujan's mock theta function f(q).at n=33A109471
- a(n) = 4694*a(n-2) + 9380*a(n-3) for n >= 3 with a(0) = 0 and a(1) = a(2) = 1.at n=4A114568
- Number of partitions of n such that the largest part is coprime to every other part.at n=41A130690
- a(n+1) is the least k such that 1/(a(n)+1) + 1/(a(n)+2) + ... + 1/k > 1, with a(1) = 1.at n=9A180224
- Number of 0..4 arrays of length n with no adjacent pair equal to its immediately preceding adjacent pair, and new values introduced in 0..4 order.at n=8A212825
- Number of compositions of n avoiding the pattern 111.at n=19A232432
- Number of partitions p of n not containing floor((min(p) + max(p))/2) as a part.at n=36A238483
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 214", based on the 5-celled von Neumann neighborhood.at n=33A270907
- Remainder when sum of squares of the first n primes is divided by n-th square pyramidal number.at n=52A282282
- a(0) = 1; a(n) = Sum_{k=0..floor(n/4)} binomial(n-3*k,k) * a(k).at n=29A352041