Properties of the Number 28104

Twenty-Eight Thousand One Hundred Four

Basics

Value: 28103 → 28104 → 28105

Parity: even

Prime: No

Previous Prime: 28099

Next Prime: 28109

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ³ × 3 × 1171

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 1171, 2342

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 110110111001000

Octal: 66710

Duodecimal: 14320

Hexadecimal: 6dc8

Square: 789834816

Square Root: 167.642476717567

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

Triangle read by rows: T(n,k) is the number of binary sequences of length n containing k subsequences 001 (n,k>=0). A118424

a(n) = ∑_{1 <= x₁ <= x₂ <= x₃ <= x₄ <= x₅ <= x₆ <= n} gcd(x₁, x₂, x₃ , x₄, x₅, x₆, n). A343520

Sum of first prime(n) primes. A22094

Terms of A007504 divisible by 3. A249679

Number of length-4 0..n arrays with no repeated value differing from the previous repeated value by other than one. A269538

Number of 3Xn 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A279743

Expansion of 1/((1-3x)(1-8x)(1-11x)(1-12x)). A28104

Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. A303036