1756
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 3080
- Proper Divisor Sum (Aliquot Sum)
- 1324
- 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
- 876
- Möbius Function
- 0
- Radical
- 878
- Omega Function (Ω)
- 3
- 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
- 55
- 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
- Numbers that are the sum of 3 nonnegative cubes in more than 1 way.at n=16A001239
- Number of n-stacks with strictly receding walls, or the number of Type A partitions of n in the sense of Auluck (1951).at n=28A001522
- a(n) = least value of m for which Liouville's function A002819(m) = -n.at n=46A002053
- Number of partitions of n into parts 5k+2 or 5k+3.at n=60A003106
- Centered pentagonal numbers: (5n^2+5n+2)/2; crystal ball sequence for 3.3.3.4.4. planar net.at n=26A005891
- Coordination sequence T6 for Zeolite Code EUO.at n=26A008101
- Coordination sequence T1 for Zeolite Code LOS.at n=29A008132
- Coordination sequence T1 for Zeolite Code LOV.at n=28A008134
- Numbers that are the sum of 3 positive cubes in more than one way.at n=8A008917
- Coordination sequence T1 for Zeolite Code DFO.at n=32A009875
- Five iterations of Reverse and Add are needed to reach a palindrome.at n=38A015982
- Powers of fifth root of 3 rounded to nearest integer.at n=34A018121
- Powers of fifth root of 3 rounded up.at n=34A018122
- Powers of fifth root of 9 rounded to nearest integer.at n=17A018139
- Powers of the fifth root of 9 rounded up.at n=17A018140
- Number of lines through exactly 3 points of an n X n grid of points.at n=16A018810
- Number of lines through exactly 9 points of an n X n grid of points.at n=44A018816
- Coordination sequence T1 for Zeolite Code CGF.at n=29A019451
- Coordination sequence T2 for Zeolite Code CGF.at n=29A019452
- Coordination sequence T3 for Zeolite Code CGF.at n=29A019453