Properties of the Number -920

Nine Hundred Twenty

Basics

Value: -921 → -920 → -919

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 5 × 23

Divisors: 1, 2, 4, 5, 8, 10, 20, 23, 40, 46

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110011000

Octal: -1630

Duodecimal: -648

Hexadecimal: -398

Square: 846400

Square Root: 30.331501776206203

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

Riordan array (1/(1-x²), x/(1+x)²). A158454

Coefficient array for square of Chebyshev S-polynomials. A181878

Determinant of n X n matrix containing the first n² 3-almost primes in increasing order. A118772

Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of A203905. A203906

G.f. satisfies A(x) = 1 + x/(1 + x³)² * A(x/(1 + x³)). A360900

G.f. satisfies A(x) = exp( 3 * ∑_k>=1 A(-x^k) * x^k/k ). A363471

Years in which a transit of Venus (as seen from Earth) took place or is expected to occur, according to the catalog by Fred Espenak. A171467

Inverse of Riordan array (1/(1-x)²,x(1-x)/(1+x)), A104698. A110271

a(n) = -n² - n + 72. A110678

Totally multiplicative sequence with a(p) = p*(p-3) = p²-3p for prime p. A167341