Properties of the Number -208981

Two Hundred Eight Thousand Nine Hundred Eighty-One

Basics

Value: -208982 → -208981 → -208980

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 17 × 19 × 647

Divisors: 1, 17, 19, 323, 647, 10999, 12293, 208981

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7989 Try Today's Challenge

Representations

Binary: -110011000001010101

Octal: -630125

Duodecimal: -A0B31

Hexadecimal: -33055

Square: 43673058361

Square Root: 457.144397318834

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) = (n²-1)*(2·n²-1). A33595

a(1) = 0, then smallest triangular number such that a(n+1)- a(n) is a palindrome. A75057

Concatenation of triangular number k and its 10's complement is prime. A108970

Triangular numbers T such that T+10 is the next prime after T. A129540