Properties of the Number 71968

Seventy-One Thousand Nine Hundred Sixty-Eight

Basics

Value: 71967 → 71968 → 71969

Parity: even

Prime: No

Previous Prime: 71963

Next Prime: 71971

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 2 ⁵ × 13 × 173

Divisors: 1, 2, 4, 8, 13, 16, 26, 32, 52, 104

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001100100100000

Octal: 214440

Duodecimal: 35794

Hexadecimal: 11920

Square: 5179393024

Square Root: 268.26852219371546

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(n) = ∑_{1 <= i, j, k, l <= n} gcd(i,j,k,l). A344523

Number of 2 X 2 matrices having all terms in {1,...,n} and determinant d satisfying -n < d < n. A211070

Denominators of coefficients of expansion of arctan(x)² = x²-2/3·x⁴+23/45·x⁶-44/105·x⁸+563/1575·x¹⁰-3254/10395·x¹²+ ... A71968