Properties of the Number 78560

Seventy-Eight Thousand Five Hundred Sixty

Basics

Value: 78559 → 78560 → 78561

Parity: even

Prime: No

Previous Prime: 78553

Next Prime: 78569

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ⁵ × 5 × 491

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011001011100000

Octal: 231340

Duodecimal: 39568

Hexadecimal: 132e0

Square: 6171673600

Square Root: 280.28556866167764

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

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 4 6 or 7. A252551

Least k such that the rank of the elliptic curve y² = x³ - x + k² is n, or -1 if no such k exists. A374926

Denominator of ∏_i=1..n (p_i+1)/(p_i-1). Numerators are in A078559. A78560