4022
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 6036
- Proper Divisor Sum (Aliquot Sum)
- 2014
- 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
- 2010
- Möbius Function
- 1
- Radical
- 4022
- 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
- 43
- 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 nonnegative solutions to x^2 + y^2 + z^2 <= n^2.at n=19A000604
- 2^n written in base 5.at n=9A000866
- Conjecturally largest even integer which is an unordered sum of two primes in exactly n ways.at n=43A000954
- Sum of rows of triangle defined in A001404.at n=10A001410
- Cubes written in base 5.at n=7A004635
- Duplicate of A000866.at n=9A004644
- Coordination sequence T1 for Zeolite Code MTN.at n=38A008186
- Molien series for 6-dimensional complex reflection group 4.U_4 (3) of order 2^9 .3^7 .5.7.at n=42A008581
- Pisot sequence T(3,5).at n=18A020745
- Pisot sequence T(5,8), a(n) = floor(a(n-1)^2/a(n-2)).at n=17A020749
- 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 62.at n=12A031560
- "DFK" (bracelet, size, unlabeled) transform of 2,2,2,2...at n=20A032214
- "DGK" (bracelet, element, unlabeled) transform of 2,1,1,1,...at n=25A032232
- Numbers having three 6's in base 8.at n=27A043447
- Coefficient of x^(-n) in expansion of continued fraction 0, x, x^2, x^3, x^4, ... .at n=51A049346
- Conjecturally largest even integer which is the sum of two primes in at most n ways.at n=43A056636
- McKay-Thompson series of class 14C for Monster.at n=12A058504
- Composite and every divisor (except for 1) contains the digit 2.at n=38A062664
- Expansion of Product_{i in A069908} 1/(1 - x^i).at n=54A069910
- Lesser of two successive squarefree numbers whose product is not squarefree.at n=36A077395