Properties of the Number -16180

Sixteen Thousand One Hundred Eighty

Basics

Value: -16181 → -16180 → -16179

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 5 × 809

Divisors: 1, 2, 4, 5, 10, 20, 809, 1618, 3236, 4045

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111100110100

Octal: -37464

Duodecimal: -9444

Hexadecimal: -3f34

Square: 261792400

Square Root: 127.20062892926276

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

McKay-Thompson series of class 5B for the Monster group with a(0) = -6. A106248

Expansion of r(q)⁵ / r(q⁵) in powers of q where r() is the Rogers-Ramanujan continued fraction. A285630

McKay-Thompson series of class 5B for the Monster group with a(0) = 0. A7252

McKay-Thompson series of class 5B for the Monster group with a(0) = 1. A45483

Given g.f. A(x), the even bisections of both A(x) and A(x)² are equal, and the odd bisections of both A(x)² and A(x)³ are equal (after the initial terms). A351771

Starts of runs of 3 consecutive primorial base Niven numbers (A333426). A333428

Numbers k such that the largest unitary divisor of σ(k) that is coprime with A003961(k) is also a unitary divisor of k. A351551

Triangle, read by rows, given by the product R³*P^-1 using triangular matrices P=A113370, R=A113389. A114152

Decimal expansion of φ truncated to n places. A11551

Triangle, read by rows, equal to the matrix square of A113370. Also given by the product: P² = Q*(R^-2)*Q³, using triangular matrices P=A113370, Q=A113381 and R=A113389. A113374