Properties of the Number -266815

Two Hundred Sixty-Six Thousand Eight Hundred Fifteen

Basics

Value: -266816 → -266815 → -266814

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 5 × 17 × 43 × 73

Divisors: 1, 5, 17, 43, 73, 85, 215, 365, 731, 1241

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1000001001000111111

Octal: -1011077

Duodecimal: -10A4A7

Hexadecimal: -4123f

Square: 71190244225

Square Root: 516.5413826597052

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

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>1. A259746

Number of partitions of 5n such that cn(1,5) = cn(4,5) = cn(2,5) = cn(3,5) < cn(0,5). A202086

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>0. A259745

Triangular numbers containing 2k digits in which the sum of the first k digits = that of the rest. A68898

a(n) is the largest number in row n of A380920. A380967