16277
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
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 16716
- Proper Divisor Sum (Aliquot Sum)
- 439
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 15840
- Möbius Function
- 1
- Radical
- 16277
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 159
- 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
- Numbers k such that the continued fraction for sqrt(k) has period 49.at n=22A020388
- Numbers whose base-5 representation has exactly 7 runs.at n=1A043607
- Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 13.at n=24A051978
- Integers that can be expressed as the sum of consecutive primes in exactly 5 ways.at n=5A055000
- Integers expressible as the sum of (at least two) consecutive primes in at least 4 ways.at n=36A067374
- Integers expressible as the sum of (at least two) consecutive primes in at least 5 ways.at n=0A067375
- Smallest integer expressible as the sum of (at least two) consecutive primes in n ways.at n=4A067376
- a(n) = floor(e*(n+3)!) - (n+3)*(n+2)*(n+1)*n*floor(e*(n-1)!).at n=22A080770
- a(n) = n^3 - 2*n^2 + 2*n + 1.at n=25A188947
- a(n) = 13*n^2 - 16*n + 5.at n=36A202141
- a(n) is the smallest number that is the sum of both 2n-1 and 2n+1 consecutive primes.at n=17A213174
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 395", based on the 5-celled von Neumann neighborhood.at n=29A271687
- Number of nX5 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=5A299883
- Number of n X 6 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=4A299884
- T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=49A299886
- T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=50A299886
- Numbers k such that 335*2^k+1 is prime.at n=14A322960
- Primitive terms of A338890.at n=28A338892
- Expansion of e.g.f. (exp(x)-1)*(exp(x) - x^2/2 - x - 1).at n=14A342352
- Numbers k such that A025487(k) and A025487(k+1) have an equal number of divisors.at n=46A375195