Properties of the Number 81992

Eighty-One Thousand Nine Hundred Ninety-Two

Basics

Value: 81991 → 81992 → 81993

Parity: even

Prime: No

Previous Prime: 81973

Next Prime: 82003

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 37 × 277

Divisors: 1, 2, 4, 8, 37, 74, 148, 277, 296, 554

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10100000001001000

Octal: 240110

Duodecimal: 3B548

Hexadecimal: 14048

Square: 6722688064

Square Root: 286.34245231889736

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 binary strings of length n with no substrings equal to 0011 0110 or 1001. A164506

Number of n X 2 0,1 arrays indicating 2 X 2 subblocks of some larger (n+1) X 3 binary array having an odd sum, with rows and columns of the latter in lexicographically nondecreasing order. A227675

a(n) = count of numbers formed using the digits of next n numbers. A81992