Properties of the Number -162

One Hundred Sixty-Two

Basics

Value: -163 → -162 → -161

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ⁴

Divisors: 1, 2, 3, 6, 9, 18, 27, 54, 81, 162

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10100010

Octal: -242

Duodecimal: -116

Hexadecimal: -a2

Square: 26244

Square Root: 12.727922061357855

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Scaled Chebyshev U-polynomials evaluated at sqrt(3)/2; expansion of 1/(1 - 3·x + 3·x²). A57083

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n as ∑_k=0..n T(n,k)*binomial(n,k). A244130

Triangle read by rows: coefficients T(n,k) of a binomial decomposition of n*(n-1) as Sum(k=0..n)T(n,k)*binomial(n,k). A244138

Expansion of (∏_j>=1 (1-(-x)^j) - 1)¹⁰ in powers of x. A1488

Expansion of bracket function. A748

Triangle read by rows: a(n, m) = S1(n, m)*3^n-m, where S1 are the signed Stirling numbers of first kind A008275 (n >= 1, 1 <= m <= n). A51141

G.f. A(x) satisfies A(x) = (1 + 9·x*A(x)²)^1/3. A376636

a(n) = nearest integer to n² * cos(sqrt(n)). A274090

Take alternate terms of A274088 and A274090. A274091

a(n) = nearest integer to k²*sin(sqrt(k)+j*π/2) where n = 3·k+j, 0<=j<3. A274092