Properties of the Number 81626

Eighty-One Thousand Six Hundred Twenty-Six

Basics

Value: 81625 → 81626 → 81627

Parity: even

Prime: No

Previous Prime: 81619

Next Prime: 81629

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 40813

Divisors: 1, 2, 40813, 81626

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111011011010

Octal: 237332

Duodecimal: 3B2A2

Hexadecimal: 13eda

Square: 6662803876

Square Root: 285.70264261990997

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

Addends k > 0 such that x² + k produces a new minimum of its Hardy-Littlewood Constant. A331949

Values of m in the discriminant D = -4·m leading to a new maximum of the L-function of the Dirichlet series L(1) = ∑_k=1..oo Kronecker(D,k)/k. A3420

a(n) = 2·6ⁿ-4ⁿ. A81626