16808
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
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 34560
- Proper Divisor Sum (Aliquot Sum)
- 17752
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7600
- Möbius Function
- 0
- Radical
- 4202
- Omega Function (Ω)
- 5
- 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
- 35
- 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
- yes
- Odd
- no
Appears in sequences
- sigma_5(n), the sum of the 5th powers of the divisors of n.at n=6A001160
- a(n) = n^5 + 1.at n=8A002561
- Numbers that are the sum of 2 positive 5th powers.at n=21A003347
- Numbers that are the sum of at most 2 positive 5th powers.at n=29A004842
- Numerator of sum of -5th powers of divisors of n.at n=6A017673
- Numbers k such that k^2 is palindromic in base 7.at n=41A029992
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 15 ones.at n=20A031783
- Sums of distinct powers of 7.at n=33A033044
- a(n) = 7^n + 1.at n=5A034491
- Sum of fifth powers of unitary divisors.at n=6A034679
- Dirichlet convolution of sigma(n) with Catalan numbers.at n=10A034764
- Positive numbers having the same set of digits in base 2 and base 7.at n=27A037412
- Sums of 2 distinct powers of 7.at n=10A038481
- Numbers whose base-7 representation contains exactly four 0's.at n=6A043396
- Numbers whose cube is palindromic in base 7.at n=15A046237
- Sum of 5th powers of odd divisors of n.at n=6A051002
- Sum of 5th powers of odd divisors of n.at n=27A051002
- Sum of 5th powers of odd divisors of n.at n=13A051002
- Sum of 5th powers of digits of n.at n=17A055014
- Sums of two powers of 7.at n=15A055258