1320
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 6
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 32
- Divisor Sum
- 4320
- Proper Divisor Sum (Aliquot Sum)
- 3000
- 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
- 320
- Möbius Function
- 0
- Radical
- 330
- Omega Function (Ω)
- 6
- 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
- no
Recreational
- Happy Number
- no
- Harshad Number
- yes
- Narcissistic Number
- no
- Collatz Steps
- 114
- 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
- Order of the group SL(2,Z_n).at n=10A000056
- Number of boron trees with n nodes, i.e. n-node rooted trees with degree <= 3 at root and out-degree <= 2 elsewhere.at n=12A000671
- Stirling numbers of the first kind: s(n+2, n).at n=9A000914
- Euler's "numerus idoneus" (or "numeri idonei", or idoneal, or suitable, or convenient numbers).at n=62A000926
- Expansion of {Product_{j>=1} (1 - (-x)^j) - 1}^12 in powers of x.at n=7A001490
- a(n) = (3n+3)!/(2n+3)!.at n=4A001763
- The coding-theoretic function A(n,4,4).at n=29A001843
- Number of partitions of an n-gon into (n-4) parts.at n=3A002059
- Absolute value of Glaisher's beta'(2n+1).at n=44A002291
- Triangle of denominators in Leibniz's Harmonic Triangle a(n,k), n >= 1, 1 <= k <= n.at n=58A003506
- Triangle of denominators in Leibniz's Harmonic Triangle a(n,k), n >= 1, 1 <= k <= n.at n=62A003506
- Discriminants of the known imaginary quadratic fields with 1 class per genus (a finite sequence).at n=55A003644
- Degrees of irreducible representations of alternating group A_11.at n=28A003866
- Degrees of irreducible representations of alternating group A_12.at n=20A003867
- Degrees of irreducible representations of alternating group A_12.at n=21A003867
- Degrees of irreducible representations of alternating group A_12.at n=19A003867
- Degrees of irreducible representations of symmetric group S_11.at n=50A003875
- Degrees of irreducible representations of symmetric group S_11.at n=51A003875
- Degrees of irreducible representations of symmetric group S_12.at n=35A003876
- Degrees of irreducible representations of symmetric group S_12.at n=34A003876