Properties of the Number -8146

One Hundred Forty-Six

Basics

Value: -8147 → -8146 → -8145

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 4073

Divisors: 1, 2, 4073, 8146

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1111111010010

Octal: -17722

Duodecimal: -486A

Hexadecimal: -1fd2

Square: 66357316

Square Root: 90.2551937563706

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) = 4·n² - 7·n + 4. A54567

G.f. satisfies A(x) = ∑_n>=0 xⁿ * (1 - A(x)^2·n+2)/(1 - A(x)²). A199475

Number of blocks in all RNA secondary structures with n nodes (an RNA secondary structure can be viewed as a restricted noncrossing partition). A110320

Triangle of coefficients of Gandhi polynomials. A36970

Numbers that are the sum of six fourth powers in three or more ways. A345560

Numbers that are the sum of six fourth powers in exactly three ways. A345815

Numbers which are the roots of distinct not-previously-encountered side-trees ("tendrils") sprouting from the side of the infinite beanstalk (see A213730). A218612

Sum of the prime parts in the partitions of n into 4 parts. A309465

Semiprimes in A054567. A113692

a(n) = ∑_k=1..n (-1)^k-1 * binomial(floor(n/k)+4,5). A366723