2326
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
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3492
- Proper Divisor Sum (Aliquot Sum)
- 1166
- 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
- 1162
- Möbius Function
- 1
- Radical
- 2326
- 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
- yes
- 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
- yes
- Odd
- no
Appears in sequences
- Centered pentagonal numbers: (5n^2+5n+2)/2; crystal ball sequence for 3.3.3.4.4. planar net.at n=30A005891
- Coordination sequence T3 for Zeolite Code SGT.at n=30A008231
- Coordination sequence T1 for Zeolite Code CON.at n=34A009868
- Coordination sequence T4 for Zeolite Code RSN.at n=31A009888
- f-vectors for simplicial complexes of dimension at most 1 (graphs) on at most n-1 vertices.at n=24A011826
- Expansion of e.g.f.: exp(exp(x)-cos(x))=1+x+3/2!*x^2+8/3!*x^3+29/4!*x^4+112/5!*x^5...at n=7A013309
- Nearest integer to Gamma(n + 8/11)/Gamma(8/11).at n=7A020007
- Ceiling of Gamma(n+8/11)/Gamma(8/11).at n=7A020097
- Numbers k such that the continued fraction for sqrt(k) has period 94.at n=1A020433
- a(n)^n is the least n-th power containing every digit.at n=2A020666
- a(n) = position of 3*n^3 in A003072.at n=18A024970
- a(n) = 3*n^2 - 7*n + 6.at n=29A027599
- 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 48.at n=2A031546
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 30 ones.at n=6A031798
- Concatenation of n and n + 3.at n=22A032608
- Numbers n such that digit sum of n equals digit sum of 'juxtaposition' and 'sum' of its prime factors (counted with multiplicity).at n=43A036921
- Digit sum of 'even' number equals digit sum of 'sum' and 'juxtaposition' of its prime factors (counted with multiplicity).at n=24A036926
- Trajectory of 3 under map n->25n+1 if n odd, n->n/2 if n even.at n=13A037110
- Denominators of continued fraction convergents to sqrt(366).at n=8A041693
- Numbers having three 4's in base 6.at n=31A043387