Properties of the Number 81246

Eighty-One Thousand Two Hundred Forty-Six

Basics

Value: 81245 → 81246 → 81247

Parity: even

Prime: No

Previous Prime: 81239

Next Prime: 81281

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 11 × 1231

Divisors: 1, 2, 3, 6, 11, 22, 33, 66, 1231, 2462

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110101011110

Octal: 236536

Duodecimal: 3B026

Hexadecimal: 13d5e

Square: 6600912516

Square Root: 285.03683972427143

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

Expansion of g.f. A(x) satisfying 1 = ∑_n=-oo..+oo (-1)ⁿ * xⁿ * (A(x) + x^4·n-1)ⁿ⁺¹. A363144

Triangle in which (2ⁿ+1)-st row gives trajectory of x=2ⁿ+1 under the map x -> x/2 if·is even, x -> x+1 if·is odd, stopping when reaching 1. A81246