Properties of the Number 77798

Seventy-Seven Thousand Seven Hundred Ninety-Eight

Basics

Value: 77797 → 77798 → 77799

Parity: even

Prime: No

Previous Prime: 77797

Next Prime: 77801

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 5557

Divisors: 1, 2, 7, 14, 5557, 11114, 38899, 77798

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10010111111100110

Octal: 227746

Duodecimal: 39032

Hexadecimal: 12fe6

Square: 6052528804

Square Root: 278.9229284228889

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 (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 or 1 and no column sum 0 or 1. A255159

Number of increasing runs in all Carlitz compositions of n. A285994

Number of (n+2) X (2+2) 0..1 arrays with no 3·3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 or 1 and no column sum 0 or 1. A255153

Palindromic wing primes (a.k.a. near-repdigit palindromic primes) of the general form r*(10^d - 1)/9 + (m-r)*10^floor(d/2) where d is the number of digits (an odd number > 1), r is the repeated digit, and m (different from r) is the middle digit. A77798

Number of nX4 binary matrices with no three 1's adjacent in a line diagonally or antidiagonally. A181215