Properties of the Number -266805

Two Hundred Sixty-Six Thousand Eight Hundred Five

Basics

Value: -266806 → -266805 → -266804

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 7 ² × 11 ²

Divisors: 1, 3, 5, 7, 9, 11, 15, 21, 33, 35

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

7925 Try Today's Challenge

Representations

Binary: -1000001001000110101

Octal: -1011065

Duodecimal: -10A499

Hexadecimal: -41235

Square: 71184908025

Square Root: 516.5317028024514

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

Odd nondeficient numbers of the form p^1+4k * r², where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1. A386427

Numbers with exactly 4 distinct odd prime divisors {3,5,7,11}. A147577

Smallest number having exactly n divisors of the form 8·k + 7. A188226

T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j). A230068

Odd nonsquares k for which A161942(k) >= k, where A161942 is the odd part of σ. A348743

a(n) is the least number with exactly n divisors of the form 4·k+1. A364584

a(n) is the least number with exactly n divisors of the form 4·k+3. A364585

Number of nX3 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j). A230063

Number of nX7 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j). A230067

Expansion of x*(1+2·x)/((1-2·x)*(1-x+4·x²)). A335840