Properties of the Number 80812

Eighty Thousand Eight Hundred Twelve

Basics

Value: 80811 → 80812 → 80813

Parity: even

Prime: No

Previous Prime: 80809

Next Prime: 80819

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 89 × 227

Divisors: 1, 2, 4, 89, 178, 227, 356, 454, 908, 20203

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011101110101100

Octal: 235654

Duodecimal: 3A924

Hexadecimal: 13bac

Square: 6530579344

Square Root: 284.27451521372785

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 arrays of n+2 integers in -k..k with sum zero and the sum of every adjacent pair being odd. A202076

T(n,k) is the number of (n+1) X (k+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235258

T(n,k)=Number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing fewer than two 1s. A184207

Number of (n+1)X4 binary arrays with no 2X2 subblock containing fewer than two 1s. A184201

Number of (n+1)X5 binary arrays with no 2X2 subblock containing fewer than two 1s. A184202

Number of arrays of n+2 integers in -4..4 with sum zero and the sum of every adjacent pair being odd. A202072

Number of arrays of 9 integers in -n..n with sum zero and the sum of every adjacent pair being odd. A202080

Number of (n+1) X (3+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235253

Number of (n+1) X (4+1) 0..7 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 7, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings). A235254

Integers n such that p = 4n + 1, q = 4p + 3, r = 4q + 5, s = 4r + 7 and t = 4s + 9 are all prime. A243528