2022
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
- 8
- Divisor Sum
- 4056
- Proper Divisor Sum (Aliquot Sum)
- 2034
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 672
- Möbius Function
- -1
- Radical
- 2022
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- 63
- 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
- Self numbers divisible by sum of their digits (or, self numbers which are also Harshad numbers).at n=44A003219
- Coordination sequence T2 for Zeolite Code DAC.at n=28A008068
- Coordination sequence T1 for Zeolite Code LAU.at n=32A008124
- Expansion of (1+x^12)/((1-x)*(1-x^2)*(1-x^3)*(1-x^4)).at n=53A008773
- Magic numbers: atoms with full shells containing any of these numbers of electrons are considered electronically stable.at n=20A018227
- a(n+1) = a(n) converted to base 10 from base 9 (written in base 10).at n=40A023392
- a(n) = prime(n)*prime(n-1) + 1.at n=14A023523
- n written in fractional base 4/2.at n=22A024630
- Index of 7^n within the sequence of the numbers of the form 3^i*7^j.at n=47A025721
- a(n) = n^2 - 3.at n=43A028872
- Numbers k such that k^2 has only even digits.at n=36A030097
- 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 28.at n=27A031526
- G.f.: Product_{k>=1} (1 + 2*x^k).at n=24A032302
- Concatenation of n and n + 2 or {n,n+2}.at n=19A032607
- Roots of 'non-palindromic squares remaining square when written backwards'.at n=40A035123
- Positive numbers having the same set of digits in base 3 and base 10.at n=25A037422
- Numbers k such that k is a substring of its base-3 representation.at n=15A038103
- Coordination sequence T1 for Zeolite Code AFN.at n=32A038403
- Coordination sequence T5 for Zeolite Code STT.at n=30A038415
- Coordination sequence T7 for Zeolite Code STT.at n=30A038419