Properties of the Number 81194

Eighty-One Thousand One Hundred Ninety-Four

Basics

Value: 81193 → 81194 → 81195

Parity: even

Prime: No

Previous Prime: 81181

Next Prime: 81197

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 40597

Divisors: 1, 2, 40597, 81194

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011110100101010

Octal: 236452

Duodecimal: 3ABA2

Hexadecimal: 13d2a

Square: 6592465636

Square Root: 284.94560884491625

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

Let f(n) = exp(π*sqrt(n)); sequence gives numbers n such that ceiling(f(n)) - f(n) < 1/10⁴. A127023

Partial sums of A253088. A255048

a(n) = floor( exp(7/10)*n! ). A30949

a(n) = 8·a(n-1) -15·a(n-2), a(0)=1, a(1)=16. A81194