16548
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 44352
- Proper Divisor Sum (Aliquot Sum)
- 27804
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4704
- Möbius Function
- 0
- Radical
- 8274
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
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
- 97
- 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 4-dimensional primitive di-isohexagonal orthogonal lattice.at n=14A008530
- Positive numbers k such that k and 4*k are anagrams in base 9 (written in base 9).at n=18A023081
- Denominators of continued fraction convergents to sqrt(22).at n=11A041035
- Denominators of continued fraction convergents to sqrt(550).at n=9A042053
- a(n) = Sum_{d|n} phi(d)*2^(n/d).at n=14A053635
- Values of k such that sum of first k primes squared is divisible by k-th prime.at n=4A077022
- Number of imprimitive (periodic) bracelets (or necklaces) with n red and blue beads such that the beads switch colors when bracelet is turned over.at n=32A115123
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, 0), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.at n=7A150976
- Values of n such that n^a-+a are primes, a=11.at n=5A155023
- y-values in the solution to x^2 - 22*y^2 = 1.at n=2A174766
- Number of (w,x,y,z) with all terms in {1,...,n} and |w-x|=w+|y-z|.at n=37A212685
- a(n) is the least value of k such that the decimal expansion of n^k contains nine consecutive identical digits.at n=12A217164
- a(n) = n(p(n)-d(n)): sum of all of parts of all partitions of n with at least one distinct part.at n=20A220486
- a(n) = Sum_{k=1..n} floor(n/k)*2^(k-1).at n=13A268235
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 425", based on the 5-celled von Neumann neighborhood.at n=30A272091
- Numbers k such that Bernoulli number B_{k} has denominator 3404310.at n=2A295596
- a(n) = Sum_{d|n} (2^d + 2*(-1)^d)*phi(n/d).at n=13A306896
- a(n) is the least practical number that is divisible by prime(n).at n=44A322371
- Half the maximum number of distinct resistances that can be produced from a circuit of n resistors of two different kinds using only series and parallel combinations.at n=7A338781
- Number of cribs that score n points in 6-card cribbage.at n=13A346266