Properties of the Number -2492

Four Hundred Ninety-Two

Basics

Value: -2493 → -2492 → -2491

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 7 × 89

Divisors: 1, 2, 4, 7, 14, 28, 89, 178, 356, 623

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100110111100

Octal: -4674

Duodecimal: -1538

Hexadecimal: -9bc

Square: 6210064

Square Root: 49.91993589739474

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 of Salie numbers. A65547

a(1) = 0, a(2) = -2; for n > 2, a(n) + a(n-2) - a(n-3) - a(n-5) - ... - a(n-p) = (-1)ⁿ⁺¹*n if n is prime, otherwise = 0, where p = largest prime < n. A2120

Expansion of q^-1 * f(-q², -q⁵)² * f(-q³, -q⁴) / f(-q¹, -q⁶)³ in powers of q where f() is Ramanujan's two-variable θ function. A108481

Triangle read by rows: matrix product of the Stirling numbers of the first kind with the binomial coefficients. A126353

Sum at 45 degrees to horizontal in triangle of A081498. A81499

Expansion of q^-1 * f(-q³, -q⁴)³ / (f(-q¹, -q⁶)² * f(-q², -q⁵)) in powers of q where f() is Ramanujan's two-variable θ function. A246713

Fifth column of Salié-triangle A065547. A95653

Engel expansion of π. A6784

Number of integer partitions of n with an alternating permutation. A345170

Coefficient of xⁿ in ∏_k>=1 1/(1-x^k)ⁿ. A8485