Properties of the Number 21914

Twenty-One Thousand Nine Hundred Fourteen

Basics

Value: 21913 → 21914 → 21915

Parity: even

Prime: No

Previous Prime: 21911

Next Prime: 21929

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 10957

Divisors: 1, 2, 10957, 21914

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 101010110011010

Octal: 52632

Duodecimal: 10822

Hexadecimal: 559a

Square: 480223396

Square Root: 148.03377992877165

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

Coordination sequence for MgZn2, Position Zn2. A9938

Numbers k such that the continued fraction for sqrt(k) has period 83. A20422

Number of length n+5 0..1 arrays with at most two downsteps in every n consecutive neighbor pairs. A256820

a(1)=1, a(n) is the smallest integer > a(n-1) such that the largest element in the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals prime(n). A70901

The first 10 digits of the fifth root of n contain the digits 0-9. A119520

Expansion of 1/((1-x)(1-4x)(1-8x)(1-10x)). A21914