Properties of the Number -816985

Eight Hundred Sixteen Thousand Nine Hundred Eighty-Five

Basics

Value: -816986 → -816985 → -816984

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 5 × 13 × 12569

Divisors: 1, 5, 13, 65, 12569, 62845, 163397, 816985

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -11000111011101011001

Octal: -3073531

Duodecimal: -334961

Hexadecimal: -c7759

Square: 667464490225

Square Root: 903.8722254832261

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

Triangle read by rows: T(n,m) = number of n X m binary matrices with no zero rows or columns (n >= 1, 1 <= m <= n). A183109

Square array A(h,k) = (2^h-1)*A(h,k-1) + ∑_i=1..h-1 binomial(h,h-i)*2ⁱ*A(i,k-1), with A(1,k) = A(h,1) = 1; read by antidiagonals. A218695

Number of 3 X n binary matrices with no zero rows or columns. A58482