16433
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 2
- Divisor Sum
- 16434
- Proper Divisor Sum (Aliquot Sum)
- 1
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 16432
- Möbius Function
- -1
- Radical
- 16433
- Omega Function (Ω)
- 1
- Little Omega Function (ω)
- 1
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
- 159
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- yes
- Composite Number
- no
- Semiprime
- no
- Squarefree Number
- yes
- Prime Power
- yes
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Prime Index
- 1905
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- no
- Odd
- yes
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has period 77.at n=21A020416
- Convolution of integers >= 3 and Lucas numbers.at n=14A023553
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 36.at n=1A031624
- Primes p such that x^16 = 2 has no solution mod p, but x^8 = 2 has a solution mod p.at n=35A059287
- Primes p such that x^48 = 2 has no solution mod p, but x^24 = 2 has a solution mod p.at n=24A059669
- Primes p such that x^8 = 2 has a solution mod p, but x^(8^2) = 2 has no solution mod p.at n=41A070184
- a(0)=1; a(n) = sigma_1(n) + sigma_2(n) + sigma_3(n).at n=25A092347
- Balanced primes (A090403) of index 3.at n=13A096707
- Triangle, read by rows, where T(n,k) = Sum_{j=0..n-k-1} C(j+k,j)*T(n-1,j+k) for n>k>=0 with T(n,n)=1.at n=56A101494
- Column 1 of triangle A101494.at n=9A101495
- Primes of the form 2^n+7^2.at n=2A104073
- Primes that are not the sum of 3 hexagonal numbers.at n=71A117089
- Total number of palindromic primes in base 4 below 4^n.at n=16A117777
- Total number of palindromic primes in base 4 below 4^n.at n=17A117777
- Smallest m such that m * prime(n) consists of decimal digits not greater than 1.at n=18A119483
- a(n) = (n^3)/2 + (3*n^2)/2 + 3*n + 3.at n=30A127873
- Prime numbers of the form (x^3)/2+(3x^2)/2+3x+3.at n=10A127874
- a(0) = 2; a(n) = least prime p such that p >= a(n-1) + 2^n.at n=13A134694
- Primes of the form 210k + 53.at n=38A140851
- Primes congruent to 31 mod 59.at n=30A142758