7259
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
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 8928
- Proper Divisor Sum (Aliquot Sum)
- 1669
- 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
- 5760
- Möbius Function
- -1
- Radical
- 7259
- 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
- 163
- 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
- no
- Odd
- yes
Appears in sequences
- An L-tile is a 2 X 2 square with the upper 1 X 1 subsquare removed; no rotations are allowed. a(n) = number of tilings of a 4 X n rectangle using tiles that are either 1 X 1 squares or L-tiles.at n=9A025234
- Least term in period of continued fraction for sqrt(n) is 5.at n=27A031429
- a(n) = (2*n+1) * (4*n-1).at n=30A033566
- Sets of 4 consecutive numbers with equal number of divisors.at n=23A039665
- Denominators of continued fraction convergents to sqrt(134).at n=12A041245
- Denominators of continued fraction convergents to sqrt(921).at n=9A042781
- Base-6 palindromes that start with 5.at n=35A043014
- Number of ways of numbering the faces of a cube with nonnegative integers so that the sum of the 6 numbers is n.at n=26A054473
- Numbers n such that zero is never reached by iterating the mapping k -> abs(reverse(lpd(k))-reverse(gpf(k))). lpd(k) is the largest proper divisor and gpf(k) is the largest prime factor of k.at n=18A076425
- Nearest integer to Sum_{k=0..n} binomial(n,k)/2^(k*(k-1)/2).at n=47A079492
- a(n) = n^3 + (n+1)^2.at n=19A100705
- a(n) = 25 + floor( Sum_{j=1..n-1} a(j)/2 ).at n=14A120148
- Total walk count of molecular graphs for linear alkanes with n carbon atoms.at n=10A144952
- a(n) = 25*n^2 + 2*n.at n=16A154377
- Products of 3 distinct non-Sophie Germain primes.at n=24A157347
- a(n) = 242*n - 1.at n=29A157961
- a(n) = 484*n - 1.at n=14A158330
- a(n) = 60*n^2 - 1.at n=10A158670
- a(n) = n-th odd nonprime * n-th odd number.at n=30A163506
- A sequence of triples of squarefree consecutive integers each composed of exactly three primes.at n=38A165936