1746
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
- 12
- Divisor Sum
- 3822
- Proper Divisor Sum (Aliquot Sum)
- 2076
- 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
- 576
- Möbius Function
- 0
- Radical
- 582
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 148
- 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
- Inverse Moebius transform applied twice to squares.at n=33A007433
- Coordination sequence T2 for Zeolite Code ATT.at n=30A008042
- Coordination sequence T1 for Zeolite Code YUG.at n=27A008247
- a(n)-th squarefree is sum of first k squarefrees for some k.at n=35A020643
- Fibonacci sequence beginning 1, 19.at n=11A022109
- [ Sum{(log(j)-log(i))^2} ], 2 <= i < j <= n.at n=51A025206
- a(n) is the smallest number that is the sum of 3 nonzero squares in exactly n ways.at n=15A025414
- Kissing number of n-dimensional lattice Kappa_n.at n=15A028923
- Numbers whose set of base-8 digits is {2,3}.at n=26A032808
- Every run of digits of n in base 8 has length 2.at n=23A033006
- Numbers whose base-8 expansion has no run of digits with length < 2.at n=32A033021
- Number of partitions of n with equal nonzero number of parts congruent to each of 1 and 4 (mod 5).at n=37A035568
- Number of partitions of n such that cn(3,5) < cn(0,5) = cn(1,5) < cn(2,5) = cn(4,5).at n=70A036877
- Differences of A038009.at n=0A038010
- Numbers k such that k-th and (k+1)-st term of A038593 differ by 8.at n=39A038639
- Numbers whose base-12 representation has the same nonzero number of 0's and 6's.at n=41A039498
- Numbers k such that 4 and 6 occur juxtaposed in the base-10 representation of k but not of k-1.at n=34A043247
- Numbers whose base-12 representation has exactly 4 runs.at n=5A043653
- Numbers k such that 4 and 6 occur juxtaposed in the base-10 representation of k but not of k+1.at n=34A044027
- Numbers k such that string 4,3 occurs in the base 7 representation of k but not of k-1.at n=40A044169