14918
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 22380
- Proper Divisor Sum (Aliquot Sum)
- 7462
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7458
- Möbius Function
- 1
- Radical
- 14918
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
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
- 71
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- Pisot sequence E(4,13): a(n) = floor( a(n-1)^2/a(n-2) + 1/2 ).at n=7A010900
- Number of partitions of n into deficient numbers.at n=37A097797
- Number of partitions of the n-th deficient number into deficient numbers.at n=29A097799
- a(n) = Sum_{k=0..n} binomial(n,k)^2*F(k+1).at n=7A114198
- Sum of n and partition number of n.at n=35A133041
- (A178476(n)-3)/9.at n=31A178486
- Sum of the numbers already removed (including the target number) in the first jump of a Sieve of Eratosthenes table.at n=28A179654
- Number of nondecreasing arrangements of 5 nonzero numbers in -(n+3)..(n+3) with sum zero.at n=16A188335
- Numbers a(n) for which there exists k>1 such that the number of partitions of a(n) into k parts is k.at n=34A209122
- Expansion of (4+x-x^2+x^3-x^4+x^5) / (1-3*x-x^2+x^3-x^4+x^5-x^6).at n=7A274952
- Number of integer partitions of n that reduce to 2, meaning their Heinz number maps to 2 under A304464.at n=35A319153
- Number of integer partitions of n with omicron 2.at n=36A325267
- a(n) is the number of elements in row n of A350605.at n=13A350606
- Index of first occurrence of n in A000319, or -1 if n never appears there.at n=23A381230