Properties of the Number 78481

Seventy-Eight Thousand Four Hundred Eighty-One

Basics

Value: 78480 → 78481 → 78482

Parity: odd

Prime: No

Previous Prime: 78479

Next Prime: 78487

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 13 × 6037

Divisors: 1, 13, 6037, 78481

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011001010010001

Octal: 231221

Duodecimal: 39501

Hexadecimal: 13291

Square: 6159267361

Square Root: 280.1446055165082

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

Numbers k such that -3 is a quadratic residue (not necessarily coprime) modulo k, k + 1, k + 2 and k + 3. A318527

Semiprimes k such that k+1, k+2, 2·k+1 and 2·k+3 are also semiprimes. A362200

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 62. A31650

Expansion of 1/(1 - x - x² - x³ + x⁶ + x⁷). A260917

Expansion of (1 - x - x² - sqrt(1 - 2·x - 5·x² - 2·x³ + x⁴)) / (2·x + 2·x²). A78481

Smallest short legs 'A' of exactly n primitive Pythagorean triangles. A132404