Properties of the Number 81841

Eighty-One Thousand Eight Hundred Forty-One

Basics

Value: 81840 → 81841 → 81842

Parity: odd

Prime: No

Previous Prime: 81839

Next Prime: 81847

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 223 × 367

Divisors: 1, 223, 367, 81841

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011111110110001

Octal: 237661

Duodecimal: 3B441

Hexadecimal: 13fb1

Square: 6697949281

Square Root: 286.0786605114055

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. 1/(1-x-x²-x⁴-x⁵). A79976

Number of compositions (ordered partitions) of n into prime power divisors of n (including 1). A284839

a(1)=0, a(n)=a(n-1)+3 if n is already in the sequence, a(n)=a(n-1)+2 otherwise. A81841