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Properties of the Number 20884

Twenty Thousand Eight Hundred Eighty-Four

Basics

Value: 20883 → 20884 → 20885

Parity: even

Prime: No

Previous Prime: 20879

Next Prime: 20887

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 2 × 23 × 227

Divisors: 1, 2, 4, 23, 46, 92, 227, 454, 908, 5221

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000110010100

Octal: 50624

Duodecimal: 10104

Hexadecimal: 5194

Square: 436141456

Square Root: 144.512975196001

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

Numbers n such that Bernoulli number Bn has denominator 1410. A272369
The number of permutations p of {1,...,n} such that |p(i)-p(i+1)| is in {3,4} for all i from 1 to n-1. A174706
Molien series for invariants of finite Coxeter group A10. A266779
Sum of the corners of a 2n+1 X 2n+1 square spiral. A325958
Numbers whose base-12 representation has exactly 5 runs. A43654
Even indices of multidigit primes with digits in strictly increasing order. A155776
G.f. satisfies: A(x) = ∑n>=0 xn*A(x)n2/(1 - x·A(x)n)n. A192209
Ordered short legs of primitive Pythagorean triangles. A20884
Indices of primes with digits in strictly increasing order. A155763
Number of nX6 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically. A208499