Properties of the Number 27784

Twenty-Seven Thousand Seven Hundred Eighty-Four

Basics

Value: 27783 → 27784 → 27785

Parity: even

Prime: No

Previous Prime: 27779

Next Prime: 27791

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 23 × 151

Divisors: 1, 2, 4, 8, 23, 46, 92, 151, 184, 302

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110010001000

Octal: 66210

Duodecimal: 140B4

Hexadecimal: 6c88

Square: 771950656

Square Root: 166.68533228811705

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of unimodal functions [1..n]->[0..2]. A223718

Numbers which are the sum of two positive cubes and divisible by 23. A101806

Consider the Diophantine equation x³ + y³ = z³ + 1 (1 < x < y < z) or 'Fermat near misses'. Arrange solutions by increasing values of z (see A050791). Sequence gives values of x. A50792

Number of (curved) edges formed when n equally spaced points are placed around a circle and all pairs of points are joined by an interior arc whose radius equals the circle's radius. A371255

a(n) = ∑_{i∣n, j∣n, k∣n} i·j*k/gcd(i,j,k). A344133

Triangle read by rows: T(n,k) is the number of compositions of n having degree of asymmetry equal to k (n>=0; 0<=k<=n/3). A275433

Decimal part of n-th root of a(n) starts with digit 3. A34080

Values of Newton-Gregory forward interpolating polynomial (1/6)*(4·n⁴ - 60·n³ + 347·n² - 927·n + 978). A30442

Number of n X n binary matrices, symmetric about both diagonal and antidiagonal, with no more than 3 ones in any 2 X 2 subblock. A141511

Number of nX5 0..1 arrays with every element equal to 1, 2 or 4 king-move adjacent elements, with upper left element zero. A297855