Properties of the Number 78257

Seventy-Eight Thousand Two Hundred Fifty-Seven

Basics

Value: 78256 → 78257 → 78258

Parity: odd

Prime: No

Previous Prime: 78241

Next Prime: 78259

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 139 × 563

Divisors: 1, 139, 563, 78257

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011000110110001

Octal: 230661

Duodecimal: 39355

Hexadecimal: 131b1

Square: 6124158049

Square Root: 279.74452630927385

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

Numerators of convergents to 1 + 2/(3 + 4/(5 + 6/(7 + ...))). A113012

Numbers k such that k divides the sum of the digits of k^2k. A108859

Number of 4 X n 0..1 arrays with antidiagonals unimodal and rows and diagonals nondecreasing. A224040

Number of walks within N² (the first quadrant of Z²) starting and ending at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (-1, 1), (0, 1), (1, -1)}. A151337

a(n) = denominator(N) where N = 0.123...n (concatenation of 1 to n after decimal point). A78257