16029
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 25116
- Proper Divisor Sum (Aliquot Sum)
- 9087
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 9792
- Möbius Function
- 0
- Radical
- 5343
- Omega Function (Ω)
- 4
- 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
- 45
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers n such that 3^n-2^(n-1) is prime.at n=30A095906
- Consider the family of multigraphs enriched by the species of endofunctions. Sequence gives number of those multigraphs with n labeled edges.at n=5A099708
- Number of 5-indecomposable (connected) graphs on n nodes.at n=12A128527
- a(n) = n*(n+1)*(5*n+7)/6.at n=26A162148
- Number of distinct solutions of sum{i=1..7}(x(2i-1)*x(2i)) = 0 (mod n), with x() only in 2..n-2.at n=7A180819
- Number of nX7 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally.at n=7A183339
- Number of nX8 binary arrays with each 1 adjacent to exactly one 1 vertically and one 1 horizontally.at n=6A183340
- 1/36 the number of (n+2)X4 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=4A184450
- 1/36 the number of (n+2)X7 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=1A184453
- T(n,k)=1/36 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=16A184457
- T(n,k)=1/36 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing two of one value, two of another, and five of the last.at n=19A184457
- Row sums of A258307.at n=9A258308
- Numbers k such that k and k + 1 are both lazy-Lucas-Niven numbers (A351719).at n=34A351720
- Result of inserting the integers n = 0, 1, 2, ... in this order into an initially empty list, where n is inserted between the pair of consecutive elements with sum equal to n and minimal absolute difference, or at the end of the list if no such pair exists.at n=37A360447
- The number of unlabeled connected fairly 4-regular multigraphs of order n, loops allowed.at n=7A361135
- Indices n where a run of primes begins in A376198.at n=11A376750