Properties of the Number 71992

Seventy-One Thousand Nine Hundred Ninety-Two

Basics

Value: 71991 → 71992 → 71993

Parity: even

Prime: No

Previous Prime: 71987

Next Prime: 71993

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 8999

Divisors: 1, 2, 4, 8, 8999, 17998, 35996, 71992

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10001100100111000

Octal: 214470

Duodecimal: 357B4

Hexadecimal: 11938

Square: 5182848064

Square Root: 268.3132497660151

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

a(j) = maximum value of n for each distinct increasing value of (Sum of the quadratic non-residues of prime(n) - Sum of the quadratic residues of prime(n)) / prime(n) for each j. A166263

a(n) = 3·n² + 2·n - 4 * ∑_k=1..n A003159(k). A71992

Number of (n+1)X(4+1) 0..3 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order. A231460