4786
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 7182
- Proper Divisor Sum (Aliquot Sum)
- 2396
- 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
- 2392
- Möbius Function
- 1
- Radical
- 4786
- 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
- 72
- 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
- Coordination sequence T3 for Zeolite Code MTN.at n=41A008188
- Coordination sequence T6 for Zeolite Code MTT.at n=42A008194
- Coordination sequence T1 for Zeolite Code TON.at n=43A008241
- Numbers k such that the continued fraction for sqrt(k) has period 58.at n=28A020397
- Fibonacci sequence beginning 2, 32.at n=12A022378
- a(n) = [ 2nd elementary symmetric function of {log(k)} ], k = 2,3,...,n.at n=34A025202
- Numbers having period-6 5-digitized sequences.at n=34A031190
- 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 68.at n=9A031566
- Sum of first n primes of form 4k-1.at n=33A038347
- Coordination sequence T3 for Zeolite Code ESV.at n=46A038412
- a(n) = (11*n^2 - 11*n + 2)/2.at n=29A069125
- Numbers k such that phi(k-1) < phi(k) < phi(k+1), where phi is the Euler totient function (A000010).at n=43A078776
- Maximum number of regions defined by n zigzag-lines in the plane when a zigzag-line is defined as consisting of two parallel infinite half-lines joined by a straight line segment.at n=33A117625
- Number of triples (p,q,r) of primes with p<q<r<=prime(n), p+q>r, q+r>p and r+p>q.at n=43A138226
- Numbers A141427(k) such that the three numbers A141427(k) -/+ 3 and A141427(k) + 1 are all prime.at n=39A144206
- Number of lines through at least 2 points of a 6 X n grid of points.at n=24A160846
- a(n) = 5*n^2 + 20*n + 1.at n=29A162316
- Semiprimes s such that both s + 3 and s - 3 are primes.at n=42A176140
- The non-common part of the smaller number of an amicable pair.at n=27A180326
- 1/16 the number of (n+1) X (n+1) 0..3 arrays with all 2 X 2 subblocks having the same four values.at n=8A184030