7446
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 15984
- Proper Divisor Sum (Aliquot Sum)
- 8538
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2304
- Möbius Function
- 1
- Radical
- 7446
- 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
- 132
- 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
- Partition function coefficients for square lattice spin 5/2 Ising model.at n=57A010109
- a(n) = floor( n*(n-1)*(n-2)/29 ).at n=61A011911
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RTE = RUB-3 [Si24O48].2R starting with a T1 atom.at n=12A019225
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 86.at n=3A031584
- Numbers k such that 49*2^k+1 is prime.at n=13A032374
- Numbers k such that 133*2^k+1 is prime.at n=19A032416
- Number of n-node rooted labeled trees with deg <= 4 at root and outdegree <= 2 elsewhere.at n=13A036661
- Numerators of continued fraction convergents to sqrt(596).at n=7A042142
- Partition function coefficients for square lattice spin 3 Ising model.at n=69A056620
- Numbers k such that k^2 + prime(k) and k^2 - prime(k) are both primes.at n=38A064483
- Total number of even parts in all partitions of n.at n=25A066898
- Position of first repeat of the opening sequence of length n occurring after the first repeat of the opening sequence of length n-1 in the Kolakoski sequence (A000002).at n=28A074300
- Numbers n such that n^3 is zeroless pandigital.at n=29A124628
- (Sum of the squares of the quadratic nonresidues of prime(n)) / prime(n).at n=42A125618
- Sums of the products of n consecutive pairs of numbers.at n=17A135036
- The n-th term of the n-th inverse binomial transform of this sequence equals (n+1)^(n-1) for n>=0.at n=5A138737
- Least of 4 consecutive integers such that their product +-5 are primes.at n=40A174244
- a(0) = 0, and for n > 0, a(n) = A002956(n) - A000041(n).at n=19A181887
- Number of partitions of n containing a clique of size 9.at n=39A183566
- Number of nX3 0..4 arrays with each element equal to the number its horizontal and vertical neighbors unequal to itself.at n=13A195957