1190
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 2592
- Proper Divisor Sum (Aliquot Sum)
- 1402
- 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
- 384
- Möbius Function
- 1
- Radical
- 1190
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- yes
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 75
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Partial sums of (unordered) ways of making change for n cents using coins of 1, 2, 5, 10 cents.at n=32A000064
- Expansion of Product (1 - x^k)^8 in powers of x.at n=24A000731
- Expansion of g.f. (1 + x + 2*x^2)/((1 - x)^2*(1 - x^3)).at n=41A000969
- Generalized pentagonal numbers: m*(3*m - 1)/2, m = 0, +-1, +-2, +-3, ....at n=56A001318
- a(n) = (3*n+1)*(3*n+2).at n=11A001504
- Oblong (or promic, pronic, or heteromecic) numbers: a(n) = n*(n+1).at n=34A002378
- a(n) = 2*n*(2*n+1).at n=17A002943
- a(n) = floor(n*phi^7), where phi is the golden ratio, A001622.at n=41A004922
- a(n) = round(n*phi^7), where phi is the golden ratio, A001622.at n=41A004942
- Second pentagonal numbers: a(n) = n*(3*n + 1)/2.at n=28A005449
- Least k such that binomial(k,n) has n or more distinct prime factors.at n=32A005733
- Primitive pseudoperfect numbers.at n=20A006036
- Number of connected vertex-transitive graphs with n nodes.at n=19A006800
- Minimum diameter of an integral set of n points in the plane, not all on a line.at n=44A007285
- Consider Leibniz's harmonic triangle (A003506) and look at the non-boundary terms. Sequence gives numbers appearing in denominators, sorted.at n=46A007622
- a(n) = n OR n^2 (applied to binary expansions).at n=33A007745
- Coordination sequence T2 for Zeolite Code BIK.at n=21A008048
- Coordination sequence T3 for Zeolite Code DOH.at n=21A008080
- Coordination sequence T2 for Zeolite Code MFI.at n=22A008165
- If a, b in sequence, so is a*b+2.at n=44A009299