1480
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 3420
- Proper Divisor Sum (Aliquot Sum)
- 1940
- 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
- 576
- Möbius Function
- 0
- Radical
- 370
- Omega Function (Ω)
- 5
- 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
- 47
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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 ways of writing n as a sum of 5 squares.at n=32A000132
- Number of asymmetric trees with n nodes (also called identity trees).at n=16A000220
- Absolute value of Glaisher's beta'(2n+1).at n=40A002291
- Related to representation as sums of squares.at n=7A002292
- Number of nonequivalent dissections of an n-gon into 3 polygons by nonintersecting diagonals up to rotation and reflection.at n=29A003453
- Theta series of D_5 lattice.at n=16A005930
- Number of rooted projective plane trees with n nodes.at n=9A006080
- Number of loopless rooted planar maps with 3 faces and n vertices and no isthmuses. Also a(n)=T(4,n-3), array T as in A049600.at n=17A006416
- Sum of the first n primes.at n=29A007504
- Coordination sequence T1 for Zeolite Code GME and AFX.at n=29A008110
- Coordination sequence T2 for Zeolite Code AFX.at n=29A009865
- arctanh(arcsinh(x)*exp(x))=x+2/2!*x^2+4/3!*x^3+24/4!*x^4+188/5!*x^5...at n=6A012592
- n*prevprime(n).at n=37A013637
- Number of Hamiltonian paths from NW to SW corners in a grid with 2n rows and 4 columns.at n=5A014524
- Numbers k such that phi(k) | sigma(k + 5).at n=47A015843
- Coordination sequence T2 for Zeolite Code OSI.at n=25A016431
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite TON = Theta-1 Nan[AlnSi24-nO48] starting with a T3 atom.at n=10A019245
- Sum of first prime(n) primes.at n=9A022094
- Sequence and first differences include all positive integers except 2.at n=48A022443
- Arrange the nontrivial binomial coefficients C(m,k) (2 <= k <= m-2) in increasing order; record the positions of the central binomial coefficients.at n=9A022913