Properties of the Number -2920

Nine Hundred Twenty

Basics

Value: -2921 → -2920 → -2919

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 73

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 73, 146

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101101101000

Octal: -5550

Duodecimal: -1834

Hexadecimal: -b68

Square: 8526400

Square Root: 54.037024344425184

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

Coefficient table for sums of squares of Chebyshev's S-Polynomials. A128495

a(n) = ∑_k=0..n k⁶ * (-1)^k * 3^n-k * binomial(n,k). A383155

a(n) = 2·a(n-1) - a(n-2) - a(n-4). A131041

Triangle read by rows: T(n,m) = ∑_k=0..n StirlingS2(n, k) * Eulerian(n - k + 1, m) *(-1)^{n - k - m} * k!. A174553

Coordination sequence for "ubt" 3D uniform tiling. A299291

Numbers n such that n!3 - 3 is prime, where n!3 = n!!! is a triple factorial number (A007661). A242994

Heptagonal (or 7-gonal) pyramidal numbers: a(n) = n*(n+1)*(5·n-2)/6. A2413

Multiples of 20 containing a 20 in their decimal representation. A121040

Integers of the form m*(m + 6)/7. A274978

Numbers that are the sum of 8 positive 6th powers. A3364