Properties of the Number -260281

Two Hundred Sixty Thousand Two Hundred Eighty-One

Basics

Value: -260282 → -260281 → -260280

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 19 ² × 103

Divisors: 1, 7, 19, 103, 133, 361, 721, 1957, 2527, 13699

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

Today's Target

8109 Try Today's Challenge

Representations

Binary: -111111100010111001

Octal: -774271

Duodecimal: -106761

Hexadecimal: -3f8b9

Square: 67746198961

Square Root: 510.177420119707

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*(2·n² - 1); also ∑_k=0..n-1 (2k+1)³. A2593

Transform of n³ by the Riordan array (1/(1-x²), x). A105636

a(n) = n²*(2·n² + (-1)ⁿ). A275496

Numerator of (9*(n⁴ - 2·n³ + 2·n² - n) + 2)/(2*(2·n-1)). A96430

Triangular arithmetic on half-squares: b(n)*(b(n) - 1)/2 where b(n) = floor(n²/2). A227970

a(n) = (9n⁴ - 18n³ + 18n² - 9n + 2)/2. A79903

Triangular numbers divisible by the square of the sum of their digits. A243008

Smallest triangular number with exactly n representations as sum of 3 positive cubes. A226984

Triangular numbers representable as b! + c². A230364

a(n) is the least positive number k that can be written in exactly k ways as (x·y+1)*(x·z+1) with x > y > z > 1. A345215