16307
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 17040
- Proper Divisor Sum (Aliquot Sum)
- 733
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 15576
- Möbius Function
- 1
- Radical
- 16307
- 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
- 115
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers whose base-5 representation has exactly 7 runs.at n=21A043607
- Semiprimes in A103377.at n=16A103397
- Number of simple graphs on at most 16 unlabeled vertices with maximal degree at most 4 with a single cycle of length 16-n.at n=9A125064
- A144325(n) + A144313(n) + A144315(n).at n=34A144715
- Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1100-0110-0011 pattern in any orientation.at n=15A147145
- 6n-1,6n+1, 6n+5, 6n+7 are all primes. That is they are adjacent pairs of twin primes.at n=36A178145
- Number of n-bead necklaces labeled with numbers -5..5 not allowing reversal, with sum zero and first differences in -5..5.at n=6A208990
- T(n,k) is the number of n-bead necklaces labeled with numbers -k..k not allowing reversal, with sum zero and first differences in -k..k.at n=61A208993
- Number of 7-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and first differences in -n..n.at n=4A208998
- Number of partitions of n where the difference between consecutive parts is at most 7.at n=37A238867
- Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 99", based on the 5-celled von Neumann neighborhood.at n=26A285822
- Number of integer partitions of n that have an even number of parts and cannot be partitioned into distinct pairs of distinct parts, i.e., that are not the multiset union of any set of edges.at n=42A339559
- Row sums of a triangle based on A261327.at n=45A349118
- a(n) = Sum_{k = ceiling(n/2)..n-1} A354169(k).at n=19A354757
- a(n) is the bitwise OR of (the binary expansions of) b(n+1) to b(2*n), where b is A354169.at n=8A354780