Properties of the Number 21484

Twenty-One Thousand Four Hundred Eighty-Four

Basics

Value: 21483 → 21484 → 21485

Parity: even

Prime: No

Previous Prime: 21481

Next Prime: 21487

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 41 × 131

Divisors: 1, 2, 4, 41, 82, 131, 164, 262, 524, 5371

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101001111101100

Octal: 51754

Duodecimal: 10524

Hexadecimal: 53ec

Square: 461562256

Square Root: 146.574213284602

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

T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. A299089

a(n) = dot_product(1,2,...,n)*(4,5,...,n,1,2,3). A26040

a(n) = 42·2ⁿ - 20. A305064

Number of (w,x,y,z) with all terms in {0,...,n} and w=max{w,x,y,z}-min{w,x,y,z}; i.e., the range of (w,x,y,z) is its first term. A212744

Numbers n such that n²⁰⁴⁸ + (n+1)²⁰⁴⁸ is prime. A274235

Number of partitions of n with at most five part sizes. A364809

Number of distinct cyclic permutations of the partitions of n; see comments. A236292

Number of compositions (ordered partitions) of n into an odd number of cubes. A339421

Number of right triangles on a (n+1)X7 grid. A189811

Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero. A299084