7468
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 13076
- Proper Divisor Sum (Aliquot Sum)
- 5608
- 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
- 3732
- Möbius Function
- 0
- Radical
- 3734
- Omega Function (Ω)
- 3
- 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
- 39
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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 for FeS2-Pyrite, S position.at n=40A009956
- Number of lines through exactly 5 points of an n X n grid of points.at n=39A018812
- Numbers k such that the continued fraction for sqrt(k) has period 60.at n=37A020399
- Numbers whose base-3 representation has exactly 9 runs.at n=19A043589
- Numbers n such that number of runs in the base 3 representation of n is congruent to 1 mod 8.at n=35A043799
- Numbers n such that number of runs in the base 3 representation of n is congruent to 0 mod 9.at n=19A043806
- Numbers k such that number of runs in the base 3 representation of k is congruent to 9 mod 10.at n=19A043824
- Let (u1,u2) be successive untouchable numbers such that phi(u1) = phi(u2); sequence gives values of u2.at n=21A048190
- Number of nonisomorphic cyclic subgroups of the group A_n X A_n (where A_n is the alternating group of degree n).at n=43A062365
- Numbers k such that the k-th term of the EKG sequence (A064413(k)) has more than one controlling prime.at n=29A073735
- Interprimes which are of the form s*prime, s=4.at n=30A075279
- Square table T(n,k), read by antidiagonals, that satisfies T(n,0)=1, T(n+1,k+1) = sum(i=0,n, sum(j=0,k, T(n-i,k-j)*T(i,j) )), such that the top row and diagonal are equal: T(0,k)=T(k,k)=A088159(k).at n=48A088158
- Numbers k such that the numerator of Bernoulli(2k) is divisible by the square of 37, the first irregular prime.at n=27A092230
- Number of partitions of n into parts free of odd squares and the only number with multiplicity in the unrestricted partitions is the number 2.at n=55A100926
- Triangle read by rows: T(n,k) is the number of hill-free Dyck paths of semilength n and having k peaks at level 2; 0<= k<=n-1, n>=2 (a Dyck path is said to be hill-free if it has no peaks at level 1).at n=55A114626
- Number of distinct angles in all integer-sided triangles with all sides <= n.at n=35A123325
- Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n and having k UDUD's starting at level 0; here U=(1,1), D=(1,-1) (0<=k<=n-1).at n=57A127153
- This is to A139025 as A139025 to A014688, see A139025 for details.at n=16A139026
- Cubes (n * n * n) in carryless arithmetic mod 10.at n=32A169885
- Triangle of coefficients of polynomials u(n,x) jointly generated with A210228; see the Formula section.at n=51A210227