4176
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
- 4
Divisibility
- Divisor Count
- 30
- Divisor Sum
- 12090
- Proper Divisor Sum (Aliquot Sum)
- 7914
- 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
- 1344
- Möbius Function
- 0
- Radical
- 174
- Omega Function (Ω)
- 7
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 33
- 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
- A generalized Fibonacci sequence.at n=47A001584
- Coordination sequence T3 for Zeolite Code FER.at n=40A008108
- Coordination sequence T3 for Zeolite Code LOV.at n=43A008136
- Coordination sequence T1 for Zeolite Code MEI.at n=47A008146
- Coordination sequence T4 for Zeolite Code MEI.at n=47A008149
- Coordination sequence T5 for Zeolite Code MTT.at n=40A008193
- Expansion of tan(sin(sin(x))).at n=4A009657
- Composite n such that phi(n) * sigma(n) is one less than a square.at n=27A015709
- Composite and even n such that phi(n) * sigma(n) is one less than a square.at n=16A015721
- Fibonacci sequence beginning 0, 29.at n=12A022363
- Numbers k such that the decimal part of k^(1/8) starts with a 'nine digits' anagram.at n=1A034283
- Positive numbers having the same set of digits in base 3 and base 8.at n=35A037420
- Sums of 3 distinct powers of 4.at n=25A038471
- Numbers whose base-8 representation has exactly 5 runs.at n=7A043627
- Numbers whose base-4 representation contains exactly four 0's and three 1's.at n=5A045036
- Revert transform of (1 + x - 4x^2 - x^3)/(1 + 2x - 2x^2 - 2x^3).at n=8A049141
- Table read by rows: T(n,k) = number of 2-connected planar graphs with n >= 1 nodes and 0 <= k <= 3n-6 edges.at n=86A049336
- Starting index of a string of 3 or more consecutive equal digits in decimal expansion of Pi.at n=33A049515
- Starting index of a string of exactly 3 consecutive equal digits in decimal expansion of Pi.at n=27A049519
- a(n) = Sum_{i=0..n} T(i,n-i), array T as in A049747.at n=23A049748