1734
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 3684
- Proper Divisor Sum (Aliquot Sum)
- 1950
- 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
- 544
- Möbius Function
- 0
- Radical
- 102
- 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
- 29
- 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
- Number of nonisomorphic and nonantiisomorphic groupoids with n elements.at n=3A001424
- Coordination sequence T1 for Zeolite Code DDR.at n=26A008071
- Coordination sequence T2 for Zeolite Code HEU.at n=27A008117
- Coordination sequence T2 for Zeolite Code LEV.at n=31A008128
- Coordination sequence T2 for Zeolite Code SGT.at n=26A008230
- Areas of Pythagorean triangles: numbers which can be the area of a right triangle with integer sides.at n=49A009112
- Coordination sequence T2 for Zeolite Code -ROG.at n=31A009860
- Coordination sequence T2 for Zeolite Code -WEN.at n=30A009863
- a(n) = floor(n*(n-1)*(n-2)/7).at n=24A011889
- Numbers k that divide s(k), where s(1)=1, s(j)=18*s(j-1)+j.at n=34A014868
- Number of 6's in all the partitions of n into distinct parts.at n=52A015741
- Number of partitions of n into distinct parts, none being 6.at n=47A015753
- a(n) is the concatenation of n and 2n.at n=16A019550
- Numbers k such that the continued fraction for sqrt(k) has period 22.at n=36A020361
- Second elementary symmetric function of 3,4,...,n+3.at n=7A024183
- a(1) = 7; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1.at n=20A025006
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Fibonacci numbers), t = A000201 (lower Wythoff sequence).at n=17A025084
- a(n) = Sum_{k=0..n} T(n,k), T given by A026758.at n=10A026765
- Numbers k that divide the (right) concatenation of all numbers <= k written in base 18 (most significant digit on left).at n=51A029463
- 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 40.at n=11A031538