16259
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 16560
- Proper Divisor Sum (Aliquot Sum)
- 301
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 15960
- Möbius Function
- 1
- Radical
- 16259
- 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
- 40
- 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
- Number of Level 3 hexagonal polyominoes with cheesy blocks and n cells.at n=7A167013
- Floor(1/{(6+n^4)^(1/4)}), where {}=fractional part.at n=28A184630
- Monotonic ordering of nonnegative differences 2^i-5^j, for 40>=i>=0, j>=0.at n=47A192114
- Monotonic ordering of nonnegative differences 4^i-5^j, for 40>= i>=0, j>=0.at n=25A192161
- Number of (w,x,y) with all terms in {0,...,n} and 2*w >= |x+y-z|.at n=28A213397
- Number of partitions of n^2 into exactly 4 prime numbers.at n=29A243940
- G.f. satisfies: A(x) = Sum_{n>=0} x^n * A(x)^n / (1-x)^(2*n+1) * [ Sum_{k=0..n} C(n,k)^2 * x^k ]^2.at n=6A246464
- a(n) = (n^3 + 6*n^2 + 17*n + 6)/6.at n=44A341209