Properties of the Number -8815

Eight Hundred Fifteen

Basics

Value: -8816 → -8815 → -8814

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 41 × 43

Divisors: 1, 5, 41, 43, 205, 215, 1763, 8815

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

9108 Try Today's Challenge

Representations

Binary: -10001001101111

Octal: -21157

Duodecimal: -5127

Hexadecimal: -226f

Square: 77704225

Square Root: 93.888231424391

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) = 5·n² + 10·n. A67724

a(n) = (4·n³-3·n²+5·n-3)/3. A177342

Numbers m with the property that its k-th smallest divisor, for all 1 <= k <= τ(m), contains exactly k "1" digits in its binary representation. A255401

Numbers n such that φ(n-1) + φ(n+1) = φ(2n). A67701

Terms k of A002977 such that both (k-1)/2 and (k-1)/3 are also terms of A002977. A85249

Numbers n not divisible by 2 or 3 such that k^k == k+1 (mod n) has no nonzero solutions. A191834

Numbers k whose ordered binary weights (A000120) of their divisors are the numbers 1 to A000005(k). A354724

Number of bicentered 6-valent trees with n nodes. A36652

a(n) = 20 + floor( (1 + ∑_j=1..n-1 a(j)) / 2 ). A120145

Vertex number of a rectangular spiral related to Fibonacci numbers and prime numbers. The distances between nearest edges of the spiral that are parallel to the initial edge are the Fibonacci numbers, while the distances between nearest edges perpendicular to the initial edge are the prime numbers. A160794