16461
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- yes
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 24960
- Proper Divisor Sum (Aliquot Sum)
- 8499
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10440
- Möbius Function
- 0
- Radical
- 5487
- 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
- 115
- 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 whose base-4 representation contains exactly four 0's and three 1's.at n=24A045036
- Palindromic and divisible by 9.at n=29A045644
- Largest palindromic substring in 8^n.at n=37A046266
- Numbers n such that n and 2n+1 are both palindromes.at n=37A069881
- Numbers n for which there are exactly seven k such that n = k + reverse(k).at n=30A072431
- n-th largest palindrome whose digit sum is n.at n=17A082265
- Palindromes in A082939.at n=16A082940
- Number of connected simple graphs with n vertices, n+4 edges, and vertex degrees no more than 4.at n=9A112424
- Numbers n such that p(5n) is prime, where p(n) is the number of partitions of n.at n=36A114166
- Number of permutations of 1..n+4 with the number moved left exceeding the number moved right by n or more.at n=9A179579
- Sum of median parts of all partitions of n into an odd number of parts.at n=34A211373
- The Wiener index of the graph obtained by applying Mycielski's construction to a benzenoid consisting of a linear chain of n hexagons.at n=12A228597
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 630", based on the 5-celled von Neumann neighborhood.at n=32A269543
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 637", based on the 5-celled von Neumann neighborhood.at n=23A273306
- Numbers n such that 7^n - 6^(n+1) is prime.at n=13A273937
- Composite numbers n such that the sum of proper divisors of n divides 2^n+1.at n=12A278337
- 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 838", based on the 5-celled von Neumann neighborhood.at n=40A290546
- Smallest palindromic number >= 2^n.at n=14A333016
- Numbers k such that sigma(k) = psi(k) + tau(k) + pi(k).at n=4A389855