Properties of the Number -437580

Four Hundred Thirty-Seven Thousand Five Hundred Eighty

Basics

Value: -437581 → -437580 → -437579

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ² × 5 × 11 × 13 × 17

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 11, 12

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101010110101001100

Octal: -1526514

Duodecimal: -191290

Hexadecimal: -6ad4c

Square: 191476256400

Square Root: 661.4982993175418

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

Triangle T(n,k) read by rows: see formula lines for definition. A97474

Triangle read by rows, coefficients of the Legendre polynomials P(n, x) times 2ⁿ: T(n, k) = 2ⁿ * [x^k] P(n, x), n >= 0, 0 <= k <= n. A157077

Apéry numbers: n·C(2·n,n). A5430

a(n) = n·binomial(n-1, floor((n-1)/2)) = n·max_i=0..n binomial(n-1, i). A100071

Triangular numbers that are the product of two triangular numbers greater than 1. A188630

a(n) = A185128(n) - A185129(n). A185253

a(n) = n!/([(n-1)/2]!*[(n+1)/2]!) for n>0, a(0)=0, and where [ ] = floor. A212303

The first of three consecutive hexagonal numbers the sum of which is equal to the sum of three consecutive primes. A298272

a(1)=1; for n >= 1, a(n+1) = lcm(a(n),n) / gcd(a(n),n). A8339

Expansion of 1/sqrt(1-4·x*y-4·x²*y). A115951