3022
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 7
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4536
- Proper Divisor Sum (Aliquot Sum)
- 1514
- 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
- 1510
- Möbius Function
- 1
- Radical
- 3022
- 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
- 92
- 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
- Coordination sequence T2 for Zeolite Code MEI.at n=40A008147
- Coordination sequence T1 for Zeolite Code NAT.at n=37A008203
- Number of triples of different integers from [ 2,n ] with no common factors between pairs.at n=40A015620
- Number of 5-tuples of different integers from [ 1,n ] with no common factors among pairs.at n=25A015698
- Numbers k such that the continued fraction for sqrt(k) has period 56.at n=6A020395
- Number of 1's in n-th term of A022482.at n=28A022484
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (1, p(1), p(2), ...).at n=15A024470
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (primes).at n=14A024478
- a(n) = position of 3*(n^2) in A000408.at n=34A024800
- Numbers whose least quadratic nonresidue (A020649) is 11.at n=16A025024
- Duplicate of A024478.at n=14A025090
- Index of 9^n within the sequence of the numbers of the form 2^i*9^j.at n=43A025734
- Positions of records in A030707.at n=48A030712
- 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 54.at n=9A031552
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 30 ones.at n=13A031798
- Numbers k such that 43*2^k+1 is prime.at n=15A032371
- Number of partitions of n with equal number of parts congruent to each of 1 and 4 (mod 5).at n=39A035558
- Number of partitions of n with equal nonzero number of parts congruent to each of 0, 2 and 3 (mod 5).at n=47A035585
- a(n)=number of Gaussian integers z=a+bi satisfying |z|<=n+1/2, b>=0.at n=43A036707
- Positive numbers having the same set of digits in base 4 and base 10.at n=24A037428