Properties of the Number -1480

Four Hundred Eighty

Basics

Value: -1481 → -1480 → -1479

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 37

Divisors: 1, 2, 4, 5, 8, 10, 20, 37, 40, 74

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: -10111001000

Octal: -2710

Duodecimal: -A34

Hexadecimal: -5c8

Square: 2190400

Square Root: 38.47076812334269

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 k(q)³ * k'(q)² * (K(q) / (π/2))⁶ / 64 in powers of q where k(), k'(), K() are Jacobi elliptic functions. A225872

Expansion of 1 - q * (ψ(q⁵) / ψ(q))² in powers of q where ψ() is a Ramanujan θ function. A138520

Expansion of q^-1/2 * k(q) * (1 - k(q)⁴) * (K(q) / (π/2))⁶ / 4 in powers of q where k(), k'(), K() are Jacobi elliptic functions. A225923

Expansion of q * (φ(-q²) * ψ(-q)²)⁴ in powers of q where φ(), ψ() are Ramanujan θ functions. A225912

Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. exp(-k·x)/(1 - x). A292977

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 173", based on the 5-celled von Neumann neighborhood. A270468

First differences of A138383. A137174

Sum of the first n primes. A7504

a(n) = ∑_k=1..n k·floor(n/k); also ∑_k=1..n σ(k) where σ(n) = sum of divisors of n (A000203). A24916

a(n) = n*(n+3). A28552