4277
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5376
- Proper Divisor Sum (Aliquot Sum)
- 1099
- 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
- 3312
- Möbius Function
- -1
- Radical
- 4277
- Omega Function (Ω)
- 3
- 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
- 25
- 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
- no
- Odd
- yes
Appears in sequences
- Absolute values of coefficients of an elliptic function.at n=6A001941
- Coordination sequence T1 for Zeolite Code ABW and ATN.at n=45A008000
- Coordination sequence T1 for Zeolite Code DAC.at n=41A008067
- a(0) = 1, a(n) = 19*n^2 + 2 for n>0.at n=15A010009
- a(n) = floor(n*(n - 1)*(n - 2)/31).at n=52A011913
- a(n) = n*(2*n-3).at n=47A014107
- T(n,1) + T(n,2) + ... T(n,n), where T is the array in A026098.at n=18A026101
- Product of n with 666 is palindromic.at n=37A030094
- Numbers with exactly five distinct base-8 digits.at n=14A031985
- a(n) = (2*n+1) * (4*n-1).at n=23A033566
- Revert transform of 2*x*(1 - x - x^3 - x^5)-x/(1+x).at n=7A049177
- a(n) = Sum_{i=0..n} T(i,n-i), array T as in A049639.at n=54A049640
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 2.at n=42A051967
- Discriminants of real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd.at n=41A051992
- a(n) = (9*n + 11)*binomial(n+10, 10)/11.at n=4A056128
- Triangle read by rows: number of commutative monoids of order n with k idempotents.at n=30A058142
- Smallest multiple of n obtained by inserting digits between every pair of digits of n. If n is a k-digit number then there are (k-1) places where digit insertion takes place and a(n) contains at least 2k-1 digits.at n=46A080436
- Sum of the vertices of ordered 3 prime sided prime triangles.at n=37A105101
- 4th diagonal of triangle in A059317.at n=28A106058
- Low point in segment n of A079051.at n=29A117518