Properties of the Number 81278

Eighty-One Thousand Two Hundred Seventy-Eight

Basics

Value: 81277 → 81278 → 81279

Parity: even

Prime: No

Previous Prime: 81239

Next Prime: 81281

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 40639

Divisors: 1, 2, 40639, 81278

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110101111110

Octal: 236576

Duodecimal: 3B052

Hexadecimal: 13d7e

Square: 6606113284

Square Root: 285.09296729312706

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+1)X(k+1) 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero. A205998

Number of (n+1)X3 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero. A205992

Number of (n+1)X6 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two, and every 2X2 determinant nonzero. A205995

Binomial transform of Chebyshev polynomial coefficients A001793. A81278