Properties of the Number 19814

Nineteen Thousand Eight Hundred Fourteen

Basics

Value: 19813 → 19814 → 19815

Parity: even

Prime: No

Previous Prime: 19813

Next Prime: 19819

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 9907

Divisors: 1, 2, 9907, 19814

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100110101100110

Octal: 46546

Duodecimal: B572

Hexadecimal: 4d66

Square: 392594596

Square Root: 140.76221083799445

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

Molien series for invariants of finite Coxeter group D₁₂ (bisected). A266775

T(n,k)=Number of nXk 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order. A241108

Sixth binomial transform of F(n+1). A81571

Minimal number (in decimal representation) with n nonprime substrings in base-3 representation (substrings with leading zeros are considered to be nonprime). A217103

"BGK" (reversible, element, unlabeled) transform of 0,1,1,1,... A32060

Numbers k such that 177·2^k+1 is prime. A32465

Number of nX4 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order. A241104

Number of nX5 0..2 arrays with no element equal to one or three horizontal or vertical neighbors, with new values 0..2 introduced in row major order. A241105

Decimal expansion of sine of 5 degrees. A19814

Table where row n lists the coefficients in the (2ⁿ)-th iteration of x+x² for n>=0, read by antidiagonals not including trailing zeros in rows. A158264