16882
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 26496
- Proper Divisor Sum (Aliquot Sum)
- 9614
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8052
- Möbius Function
- -1
- Radical
- 16882
- Omega Function (Ω)
- 3
- 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
- 58
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- T(2n-1,n-1), T given by A026659.at n=7A026663
- T(n,[ n/2 ]), T given by A026659.at n=15A026665
- a(n) is the difference between the largest and smallest integer solutions to n=x/pi(x), where pi(x) = A000720(x).at n=44A087236
- Output of the linear congruential pseudo-random number generator used in function rand() as described in Kernighan and Ritchie, when seeded with 0.at n=36A096554
- Number of distinct values of the sum of 3 products of three 0..n integers.at n=18A225260
- Numbers n such that (4 * 6^n + 1)/5 is prime.at n=22A248613
- Number of partitions of n into two sorts of parts having exactly 5 parts of the second sort.at n=10A258475
- a(n) = 2*n^3 - 4*n^2 + 6*n - 2 (n>=1).at n=20A304159
- G.f.: Sum_{k>=1} (k^4 * x^(k^2) / Product_{j=1..k} (1 - x^j)).at n=29A333152
- Number of subsets of {2..n} such that the product of the elements is a decimal palindrome.at n=44A339508
- Numbers that are the sum of eight fourth powers in eight or more ways.at n=12A345583
- Numbers that are the sum of eight fourth powers in exactly eight ways.at n=10A345840