1594
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
- 4
- Divisor Sum
- 2394
- Proper Divisor Sum (Aliquot Sum)
- 800
- 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
- 796
- Möbius Function
- 1
- Radical
- 1594
- 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
- 122
- 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
- yes
- Odd
- no
Appears in sequences
- Number of tertiary alcohols (alkanols or alkyl alcohols C_n H_{2n+1} OH) with n carbon atoms.at n=13A000600
- Numbers that are the sum of 12 positive 6th powers.at n=27A003368
- Number of abstract n-dimensional crystallographic point groups.at n=6A006226
- a(n) = Fibonacci(n) - 3. Number of total preorders.at n=13A006327
- Two-rowed truncated monotone triangles.at n=4A006947
- Coordination sequence T6 for Zeolite Code EUO.at n=25A008101
- Coordination sequence T6 for Zeolite Code MTW.at n=26A008201
- Coordination sequence T2 for Zeolite Code NAT.at n=27A008204
- Coordination sequence T5 for Zeolite Code VET.at n=24A009906
- Sum along upward diagonal of Pascal triangle to halfway point.at n=18A010754
- Sum along upward diagonal of Pascal triangle up to (but not including) halfway point.at n=18A010755
- Triangle read by rows: number of P-graphs by number of edges and number of non-root nodes.at n=18A011268
- Start with 1, apply 1->12, 21->21, 22->21, 2->2 (for final 2); a(n) = length of n-th term.at n=22A013950
- Partial sums of primes, if 1 is regarded as a prime (as it was until quite recently, see A008578).at n=30A014284
- Numbers k such that the continued fraction for sqrt(k) has period 25.at n=7A020364
- Coordination sequence T5 for Zeolite Code MWW.at n=27A024990
- a(n) = n-th largest even number in array T given by A027170.at n=29A027183
- a(n) = (n+3)^2 - 6.at n=37A028878
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 5.at n=9A031418
- Multiplicity of highest weight (or singular) vectors associated with character chi_77 of Monster module.at n=33A034465