4358
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
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6540
- Proper Divisor Sum (Aliquot Sum)
- 2182
- 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
- 2178
- Möbius Function
- 1
- Radical
- 4358
- 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
- 46
- 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
- Sequence b_3 (n) arising from homology of partitions with even number of blocks.at n=6A003993
- Number of points on surface of octahedron; also coordination sequence for cubic lattice: a(0) = 1; for n > 0, a(n) = 4n^2 + 2.at n=33A005899
- Coordination sequence T1 for Zeolite Code DAC.at n=42A008067
- a(0) = 1, a(n) = 9*n^2 + 2 for n>0.at n=22A010002
- Number of partitions of n into distinct parts, none being 7.at n=55A015754
- Number of integer points (x,y,z) at distance <= 0.5 from sphere of radius n.at n=19A016728
- Expansion of 1/(1-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17-x^18).at n=67A017894
- Sum of digits in n-th term of A006711.at n=27A022480
- a(n) = Sum_{k=0..n} (k+1) * A026725(n, n-k).at n=9A027212
- Squarefree n such that Q(sqrt(n)) has class number 5.at n=32A029705
- 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 66.at n=0A031564
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 66.at n=1A031744
- Coordination sequence T3 for Zeolite Code ESV.at n=44A038412
- Numbers having, in base 16, (sum of even run lengths)=(sum of odd run lengths).at n=35A044887
- Numbers whose base-4 representation contains exactly three 0's and three 1's.at n=34A045031
- Numerators of convergents to A058914.at n=21A048817
- a(n) is the total second area moment of all self-avoiding polygons of length 2n on the square lattice.at n=4A056631
- Square of the Euclidean length of the vector of Littlewood-Richardson coefficients of Sum_{lambda |- n} s_lambda^2, where s_lambda are the symmetric Schur functions and the sum runs over all partitions lambda of n.at n=7A067855
- n for which floor((4/3)^n) is prime.at n=28A070762
- Smallest of four consecutive integers divisible by four consecutive primes respectively.at n=25A072555