1882
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
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2826
- Proper Divisor Sum (Aliquot Sum)
- 944
- 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
- 940
- Möbius Function
- 1
- Radical
- 1882
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 130
- 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 n-step spiral self-avoiding walks on hexagonal lattice, where at each step one may continue in same direction or make turn of 2*Pi/3 counterclockwise.at n=24A000511
- Number of threshold functions of n or fewer variables.at n=4A000609
- Numbers k such that 10*3^k + 1 is prime.at n=18A005539
- Greatest k such that binomial(k,n) has fewer than n distinct prime factors.at n=17A005735
- Coordination sequence T5 for Zeolite Code DDR.at n=27A008075
- Coordination sequence T2 for Zeolite Code MFS.at n=27A008174
- Coordination sequence T2 for Zeolite Code YUG.at n=28A008248
- Year of birth of n-th President of U.S.A.at n=31A008745
- Coordination sequence T1 for Zeolite Code DFO.at n=33A009875
- Numbers k such that the continued fraction for sqrt(k) has period 9.at n=18A010339
- Expansion of 1/(1 - x^10 - x^11 - x^12 - x^13 - x^14 - x^15 - x^16).at n=66A017892
- Coordination sequence T3 for Zeolite Code CGF.at n=30A019453
- Expansion of 1/((1-x)(1-3x)(1-5x)(1-8x)).at n=3A021434
- Place where n-th 1 occurs in A023125.at n=22A022787
- a(n) = Sum_{k=2..n} k*floor(n/k).at n=46A024917
- a(n) = T(2n,n-1), where T is the array defined in A024996.at n=5A026076
- Coordination sequence T3 for Zeolite Code CGS.at n=32A027367
- Number of distinct products ijk with 0 <= i < j < k <= n.at n=31A027429
- Positions of record values in A030727.at n=39A030732
- First occurrence of n as a term in the continued fraction for zeta(3).at n=39A033165