Properties of the Number -28545

Twenty-Eight Thousand Five Hundred Forty-Five

Basics

Value: -28546 → -28545 → -28544

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 11 × 173

Divisors: 1, 3, 5, 11, 15, 33, 55, 165, 173, 519

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110111110000001

Octal: -67601

Duodecimal: -14629

Hexadecimal: -6f81

Square: 814817025

Square Root: 168.9526560903971

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

Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and even nonnegative determinant. A211156

Composite squarefree numbers n such that p(i)-7 divides n+7, where p(i) are the prime factors of n. A225707

a(n) gives the odd leg of the second of the two Pythagorean triangles with hypotenuse A080109(n) = A002144(n)². This is the larger of the two possible odd legs. A253804

Triangle read by rows: T(n, k) = ∑_d=0..n-k binomial(n, d)*StirlingS2(n-d, k)*63^n-d-k, with 0 <= k <= n. A364072

Number of solutions to x² + y² + z² < n²; number of lattice points inside a sphere of radius n. A78183

Primitive elements of A065607. A120692

Elements of A065607 from primitive triples. A120693

Expansion of 1/(∑_i>=0 q^2·i*(i+1)/∏_j=0..i (1 - q^2·j+1)²). A294599

Open 3-dimensional ball numbers (version 1): a(n) is the number of integer points (i,j,k) contained in an open ball of diameter n, centered at (0,0,0). A53592

Composite numbers k such that P(k, 5) == 5 (mod k), where P(k, 5) = A006442(k) is the k-th Legendre polynomial evaluated at 5. A330204