Properties of the Number -207

Two Hundred Seven

Basics

Value: -208 → -207 → -206

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 23

Divisors: 1, 3, 9, 23, 69, 207

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001111

Octal: -317

Duodecimal: -153

Hexadecimal: -cf

Square: 42849

Square Root: 14.38749456993816

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

Expansion of 1/(1 - x*∏_k>=1 (1 - x^k)). A299105

Antidiagonal-sums of the array A175804(n,k) = n-th term of k-th differences of partition numbers (A000041). A377056

Expansion of φ(-x) * χ(-x) in powers of·where φ(), χ() are Ramanujan θ functions. A132970

Square array A(n, k) = A246278(1+n, k) - 2·A246278(n, k), read by falling antidiagonals, where A246278 is the prime shift array. A372562

a(n) = ∑_d∣n (-1)^d-1 * binomial(d+n/d-1, d). A338682

Coefficients in the expansion of 1/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = 7/5. A279779

Expansion of exp( ∑_n>=1 -σ(6·n)*xⁿ/n ) in powers of x. A283164

Expansion of ∏_n>=1 (1 - (9·x)ⁿ)^1/3. A303152

Expansion of ∏_k>=1 1/(1 - μ(k)*x^k), where μ() is the Möbius function (A008683). A306327

Number of partitions of n with even crank minus number of partitions of n with odd crank. A124226