6273
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 9828
- Proper Divisor Sum (Aliquot Sum)
- 3555
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3840
- Möbius Function
- 0
- Radical
- 2091
- Omega Function (Ω)
- 4
- 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
- 62
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = 15*a(n-1) - 15*a(n-2) + a(n-3) with a(0)=1, a(1)=3, and a(2)=33.at n=4A011922
- Number of segments (and sides) created by diagonals of an n-gon in general position.at n=15A014628
- Pseudoprimes to base 44.at n=36A020172
- Pseudoprimes to base 55.at n=27A020183
- Pseudoprimes to base 91.at n=40A020219
- Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 8 skipped primes.at n=39A050775
- Numbers n such that n^2 - 1 is expressible as the sum of two nonzero squares in exactly one way.at n=25A050797
- Number of ways to color vertices of a pentagon using <= n colors, allowing rotations and reflections.at n=9A060446
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 83 ).at n=22A063356
- Number of solutions of x^3=1 in general affine group AGL(n,2).at n=3A063386
- Number of solutions of x^9=1 in general affine group AGL(n,2).at n=3A063392
- Row sums of the triangle in A122820.at n=40A077388
- a(n) = 6*n^2 + 4*n + 1.at n=32A080859
- Third row of Pascal-(1,3,1) array A081578.at n=28A081585
- A077388 sorted and duplicates removed.at n=37A082638
- Antidiagonal sums of triangle A092422, which is generated from the even-numbered Fibonacci polynomials (A011973).at n=16A092424
- Middle term of a triple of consecutive numbers which are sums of two squares.at n=7A096129
- Structured hexagonal diamond numbers (vertex structure 5).at n=16A100178
- Assume the conjectured terms of A105594 are the correct beginnings of the trajectories described in A003508. a(n) is a record length of b(n) iterations to arrive at the collected trajectories. This sequence cites the a(n)'s.at n=15A105600
- Cumulative sum of A000001(n)^A000001(n).at n=12A111101