1732
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 3038
- Proper Divisor Sum (Aliquot Sum)
- 1306
- 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
- 864
- Möbius Function
- 0
- Radical
- 866
- 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
- 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
- Strehl's sequence "C_n^(3)".at n=3A000658
- Numbers k such that phi(2k+1) < phi(2k).at n=22A001837
- Number of Dyck paths of knight moves.at n=13A005223
- Number of 5-colorings of cyclic group of order n.at n=6A007688
- Coordination sequence T5 for Zeolite Code DDR.at n=26A008075
- Coordination sequence T5 for Zeolite Code EUO.at n=26A008100
- Year of birth of n-th President of U.S.A.at n=0A008745
- If a, b are in the sequence, so is ab+3.at n=40A009302
- Coordination sequence T4 for Zeolite Code VET.at n=25A009905
- a(n) = floor(sqrt(3)*10^n).at n=3A011549
- Decimal expansion of sqrt(3) rounded to n places.at n=3A011550
- Coordination sequence T2 for Zeolite Code CZP.at n=27A019457
- Ceiling of Gamma(n+7/11)/Gamma(7/11).at n=7A020098
- Numbers k such that the continued fraction for sqrt(k) has period 42.at n=11A020381
- Discriminants of quartic fields with 2 complex conjugates (negated).at n=36A023681
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A000201 (lower Wythoff sequence).at n=17A025113
- [ Sum (s(j) - s(i))^3 ], 1 <= i < j <= n, where s(k) = 1 + 1/2 + ... + 1/k.at n=36A025217
- a(n) = sum of the numbers between the two n's in A026342.at n=43A026345
- a(n)/1000 gives sqrt(n) to 3 places after the decimal point.at n=2A027662
- Inverse binomial transform of a_0 = 1, a_1, a_2, etc. is a_0, 0, a_1, 0, a_2, 0, etc.at n=10A027826