Properties of the Number 18284

Eighteen Thousand Two Hundred Eighty-Four

Basics

Value: 18283 → 18284 → 18285

Parity: even

Prime: No

Previous Prime: 18269

Next Prime: 18287

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 ² × 7 × 653

Divisors: 1, 2, 4, 7, 14, 28, 653, 1306, 2612, 4571

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011101101100

Octal: 43554

Duodecimal: A6B8

Hexadecimal: 476c

Square: 334304656

Square Root: 135.21834195108295

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 (w,x,y,z) with all terms in {1,...,n} and |w-x|=|x-y|+|y-z|. A212570

a(n) is the number of integer partitions of n for which the smallest part is equal to the index of the seaweed algebra formed by the integer partition paired with its weight. A318196

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with the (lower) median of each row and column nondecreasing. A237738

a(n) = Fibonacci(2·n+1) + 2·Fibonacci(2·n-1) - 2ⁿ - [n = 0], where [b] is the Iverson bracket of b. A84086

Number of 2 X 2 matrices with all terms in {0,1,...,n} and (sum of terms) = n + 5. A210377

Number of (n+2)X(1+2) 0..1 arrays with the (lower) median of each row and column nondecreasing. A237734

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 606", based on the 5-celled von Neumann neighborhood. A273206

a(n) = ∑_{i+j+k+m=n, i,j,k,m >= 1} τ(i) * τ(j) * τ(k) * τ(m). A375002

Number of (n+2)X(4+2) 0..1 arrays with the (lower) median of each row and column nondecreasing. A237737

Number of (n+1)X(2+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock. A236350