Properties of the Number -1600

Six Hundred

Basics

Value: -1601 → -1600 → -1599

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 2 ⁶ × 5 ²

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 25, 32

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11001000000

Octal: -3100

Duodecimal: -B14

Hexadecimal: -640

Square: 2560000

Square Root: 40

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

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: terms T(n,k) of a binomial decomposition of n as Sum(k=0..n)T(n,k). A244131

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

a(n) = -(-1)ⁿ * n². A162395

Expansion of ∑_k>0 x^2·k/(1+x^k)⁴. A363598

Signed triangle used to compute column sequences of array A078741 ((3,3)-Stirling2). A90219

Expansion of ψ(x)² * φ(-x)⁶ in powers of·where φ(), ψ() are Ramanujan θ functions. A227695

a(n) = E2_n(-1) with E2_n the polynomials defined in A326480. A326482

a(n) = [xⁿ] ∏_k>=1 (1 - n·x^k)^k. A298986

Expansion of cos(sin(x))/exp(x). A9045