Properties of the Number -128512

One Hundred Twenty-Eight Thousand Five Hundred Twelve

Basics

Value: -128513 → -128512 → -128511

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ⁹ × 251

Divisors: 1, 2, 4, 8, 16, 32, 64, 128, 251, 256

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11111011000000000

Octal: -373000

Duodecimal: -62454

Hexadecimal: -1f600

Square: 16515334144

Square Root: 358.48570403852926

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

Triangle read by rows: T(n,k) (n >= 1, 0 <= k <= ceiling(n/2)-1) = number of permutations of [n] with k peaks. A8303

Triangle read by rows: T(n,k) = t(n-k, k); t(n,m) = f(m)*t(n-1,m) + f(n)*t(n,m-1), where f(x) = 2·x + 2. A257609

Expansion of 2·x³/((1-2·x)²*(1-4·x)). A431

Triangle read by rows. T(n, k) = [x^k] P(n, x), where P(n, x) = ∑_k=0..n 2^{n - k} * ∑_j=0..k (x^j * binomial(k, j) * (j + 1)ⁿ), (tangent case). A363399

Nonunitary near-perfect numbers: k such that nusigma(k) = k + d where d is a nonunitary divisor of k. A362969

Irregular triangular array read by rows: row n shows the coefficients in the expansion of the n-th derivative of tan(x) as a linear combination of products of powers of sec(x)² and tan(x). A392124