4298
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 7392
- Proper Divisor Sum (Aliquot Sum)
- 3094
- 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
- 1836
- Möbius Function
- -1
- Radical
- 4298
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 25
- 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
- a(n) = n*(11*n - 1)/2.at n=28A022268
- Numbers k such that 105*2^k+1 is prime.at n=33A032402
- Smallest of first string of exactly 2n-1 consecutive composite integers.at n=14A045881
- a(n) = Sum_{i=0..n} T(i,n-i), array T as in A049704.at n=44A049708
- First subsequent, disjoint occurrence of n consecutive nonprimes.at n=26A060064
- Number of ordered bicoverings of an unlabeled n-set.at n=5A060090
- Numbers m such that [A070080(m), A070081(m), A070082(m)] is a right integer triangle.at n=12A070136
- Numbers k such that [A070080(k), A070081(k), A070082(k)] is a right integer triangle with relatively prime side lengths.at n=5A070137
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is an integer triangle with integer area, having relatively prime side lengths.at n=32A070143
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is a scalene integer triangle with integer area.at n=34A070144
- Numbers k such that [A070080(k), A070081(k), A070082(k)] is an integer Heronian triangle having triangular area.at n=11A070148
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is an integer triangle with integer inradius.at n=29A070209
- Euler transform of 1, 1, 3, 8, 23, ... (A050535).at n=8A076866
- Coefficient triangle of polynomials used for numerator of g.f.s for column sequences of array A078739.at n=22A089275
- G.f. = (1 + 4 * g.f. for A096661)/(1 + 2 Sum_{m>=1} (-1)^m*q^(m^2)).at n=49A097042
- Number of positive integers <= 10^n that are divisible by no prime exceeding 23.at n=5A108277
- Triangle T(n,k) of elements of n-th Weyl group of type B whose reduced word uses n-k generators.at n=22A109281
- Diagonal sums of A110537 viewed as a number triangle.at n=17A110539
- Numbers k such that the sum of the first k double factorials (1!! + 2!! + ... + k!!) is prime.at n=20A114995
- The first 8 values are predefined, the remaining set to a(n) = 48*prime(n)+n+2.at n=23A129025