1546
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2322
- Proper Divisor Sum (Aliquot Sum)
- 776
- 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
- 772
- Möbius Function
- 1
- Radical
- 1546
- 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
- 122
- 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
- MacMahon's generalized sum of divisors function.at n=12A002128
- Number of partial permutations of an n-set; number of n X n binary matrices with at most one 1 in each row and column.at n=5A002720
- Generalized weak orders on n points.at n=3A004122
- a(n) = a(n-2) + a(n-3), with a(0) = 0, a(1) = 1, a(2) = 2.at n=27A007307
- Coordination sequence T4 for Zeolite Code VET.at n=24A009905
- Numbers k such that the continued fraction for sqrt(k) has period 7.at n=14A010338
- a(n+3) = 5*a(n+2)-4*a(n+1)+a(n).at n=7A012866
- Number of 6's in all the partitions of n into distinct parts.at n=51A015741
- Number of partitions of n into distinct parts, none being 6.at n=46A015753
- Expansion of 1/(1-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17-x^18).at n=49A017876
- Convolution of A023532 and composite numbers.at n=49A023599
- Convolution of Lucas numbers and primes.at n=9A023625
- a(n) = Sum_{k=1..n} floor((n/k) * floor((n/k) * floor(n/k))).at n=10A024922
- Index of 7^n within the sequence of the numbers of the form 3^i*7^j.at n=41A025721
- [ exp(13/17)*n! ].at n=5A030887
- Numbers having period-2 7-digitized sequences.at n=26A031202
- Number of different sets ("cut sets") of triangles a regular (n+2)-gon can be dissected into; two triangulations of an (n+2)-gon are equal if all numbers of congruent triangles coincide.at n=14A033961
- Trajectory of 1 under map n->43n+1 if n odd, n->n/2 if n even.at n=28A033977
- Number of binary [ n,3 ] codes.at n=14A034357
- Number of partitions of n into parts not of forms 4*k+2, 20*k, 10*k+5.at n=37A036026