Properties of the Number -285156

Two Hundred Eighty-Five Thousand One Hundred Fifty-Six

Basics

Value: -285157 → -285156 → -285155

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 89 ²

Divisors: 1, 2, 3, 4, 6, 9, 12, 18, 36, 89

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -1000101100111100100

Octal: -1054744

Duodecimal: -119030

Hexadecimal: -459e4

Square: 81313944336

Square Root: 534

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

Determinant of the n X n matrix with (i,j)-entry equal to 1 or 0 according as i + j and 4*(i + j)² + 1 are both prime or not. A228561

a(1)=1; at n>=2, a(n) = least square > a(n-1) such that sum a(1)+...+a(n) is a prime number. A139033

Primitive exponential admirable numbers: the powerful terms in A336680. A391283

Exponential abundant numbers that are squares of squarefree numbers. A391428

Squares such that square-+5 are primes. A154711

Number of (n+2) X (6+2) 0..1 arrays with no 3·3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum. A258892

Numbers k such that k^k == 1 (mod σ(k)). A181476