16502
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 25536
- Proper Divisor Sum (Aliquot Sum)
- 9034
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7992
- Möbius Function
- -1
- Radical
- 16502
- 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
- 66
- 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
- Number of cubefree words of length n on two letters.at n=23A028445
- Bessel function J_0(n) is a monotonically decreasing positive sequence.at n=32A046960
- Numbers n such that [A070080(n), A070081(n), A070082(n)] is an acute integer triangle with integer area.at n=34A070146
- Numbers k for which 2^k + 3^k + 4^k is prime.at n=10A081507
- Numbers k such that (5^p - 3^p)/2 is prime, where p = prime(k).at n=18A123704
- Numbers k that divide 5^k + 3^k + 2^k.at n=14A220170
- Years >= 1801 in which Christmas falls in Sukkot.at n=16A222419
- Ulam numbers k such that 4*k and 16*k are also Ulam numbers.at n=23A287634
- G.f. A(x) satisfies 1 = Sum_{n=-oo..+oo} ( x^(2*n-1) + (-A(x))^n )^n.at n=15A377254