Properties of the Number -90185

Ninety Thousand One Hundred Eighty-Five

Basics

Value: -90186 → -90185 → -90184

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 17 × 1061

Divisors: 1, 5, 17, 85, 1061, 5305, 18037, 90185

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10110000001001001

Octal: -260111

Duodecimal: -44235

Hexadecimal: -16049

Square: 8133334225

Square Root: 300.30817504690077

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)=Half the number of (n+1)X(k+1) binary arrays with no 2X2 subblock containing exactly one 1. A184197

Sort then Add, a(1)=13. A33897

Half the number of (n+1) X 3 binary arrays with no 2 X 2 subblock containing exactly one 1. A184190

Half the number of (n+1)X7 binary arrays with no 2X2 subblock containing exactly one 1. A184194

Number of nX4 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero. A304266

Number of non-isomorphic 5 X 5 nonnegative integer symmetric matrices with all row and column sums equal to n up to permutations of rows and columns. A333887