2329
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2484
- Proper Divisor Sum (Aliquot Sum)
- 155
- 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
- 2176
- Möbius Function
- 1
- Radical
- 2329
- 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
- 151
- 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
- no
- Odd
- yes
Appears in sequences
- Expansion of e.g.f. exp(-x)/(1-2*x).at n=5A000354
- a(n) = (n+1)*(n^2+n+2)/2; g.f.: (1 + 2*x^2) / (1 - x)^4.at n=16A006000
- Smallest number m such that the trajectory of m under iteration of Euler's totient function phi(n) [A000010] contains exactly n distinct numbers, including m and the fixed point.at n=12A007755
- Juxtapose pairs of primes.at n=4A007795
- Coordination sequence T1 for Zeolite Code APD.at n=32A008034
- Coordination sequence T1 for Zeolite Code CHA.at n=37A008066
- Coordination sequence T4 for Zeolite Code DAC.at n=30A008070
- Coordination sequence T2 for Zeolite Code MEL.at n=31A008151
- Coordination sequence T3 for Zeolite Code MFS.at n=30A008175
- Coordination sequence T3 for Zeolite Code NON.at n=29A008214
- Pseudoprimes to base 100.at n=20A020228
- Numbers k such that the continued fraction for sqrt(k) has period 28.at n=41A020367
- a(n) = (d(n)-r(n))/5, where d = A026043 and r is the periodic sequence with fundamental period (0,2,3,0,0).at n=29A026045
- Numbers k that divide the (right) concatenation of all numbers <= k written in base 17 (most significant digit on left).at n=6A029462
- Number of connected nonisomorphic relations with no symmetry.at n=4A030244
- Concatenation of n and n + 6 or {n,n+6}.at n=22A032611
- Numbers whose set of base-6 digits is {1,4}.at n=44A032818
- Coordination sequence T2 for Zeolite Code TSC.at n=40A033617
- Sorted elements of table (A035002) of a(m,n) = sum(a(m-k,n), k=1..m-1)+sum(a(m,n-k), k=1..n-1).at n=30A035001
- Square array read by antidiagonals: T(m,n) = Sum_{k=1..m-1} T(m-k,n) + Sum_{k=1..n-1} T(m,n-k).at n=49A035002