Properties of the Number -78690

Seventy-Eight Thousand Six Hundred Ninety

Basics

Value: -78691 → -78690 → -78689

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 43 × 61

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 43, 61

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -10011001101100010

Octal: -231542

Duodecimal: -39656

Hexadecimal: -13362

Square: 6192116100

Square Root: 280.5173791407584

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 nXk 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 diagonally or antidiagonally. A229380

a(n) = ∑_{k=0..floor(n/3)} 2^n-3·k * binomial(k,n-3·k)². A387516

Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 diagonally or antidiagonally. A229373

Number of nX4 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 diagonally or antidiagonally. A229376