8367
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 11160
- Proper Divisor Sum (Aliquot Sum)
- 2793
- 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
- 5576
- Möbius Function
- 1
- Radical
- 8367
- 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
- 158
- 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
- no
- Odd
- yes
Appears in sequences
- T(n, 2*n-3), T given by A027960.at n=34A027965
- 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 29.at n=37A031527
- a(n) is root of square starting with digit 7: first term of runs.at n=5A035074
- Digitally balanced numbers in both bases 2 and 3.at n=5A049361
- a(n) = (n^3 + 6n^2 - n + 12)/6.at n=35A074742
- Number of partitions of n such that the least part occurs with odd multiplicity.at n=34A096375
- Numbers k such that 2^(2*(k+1)) + 2^k - 1 is prime.at n=31A105181
- Numbers k such that 2^k - prime(k)^2 is prime.at n=14A116999
- Semiprimes (p+4) associated with last prime in A137626.at n=5A137628
- Numbers k such that the number of digits d in k^2 is not prime and for each factor f of d the sum of the d/f digit groupings in k^2 of size f is a square.at n=24A153745
- Numbers k such that there are 8 digits in k^2 and for each factor f of 8 (1,2,4) the sum of digit groupings of size f is a square.at n=14A153746
- Number of (n+1) X (n+1) -3..3 symmetric matrices with every 2 X 2 subblock having sum zero and one or two distinct values.at n=15A211322
- Numbers k such that 2*k!! - 1 is prime.at n=34A215779
- Magic constants of the magic cubes 3 X 3 X 3 composed of prime numbers.at n=9A239671
- Expansion of Product_{k>=1} (1 + 2*x^k)/(1 - x^k).at n=16A264686
- Numbers k such that k, k + 1 and k + 2 are all norm-deficient in Gaussian integers (A332572).at n=25A332574
- Subword complexity of the infinite word Product_{i>=1} Product_{j=1..i} a^(i-j+1) b^j.at n=36A338760
- Discriminants of imaginary quadratic fields with class number 30 (negated).at n=38A351668
- Length of commas sequence (cf. A121805) if start at 1 and do the calculations in base n; or -1 if the sequence is infinite.at n=6A367604
- Positive integers that are digitally balanced in more than one integer base b >= 2.at n=31A378104